Calculus Examples

$y = \frac{{(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3}}{{(e^{x} + 1)}^{7}}$

Step 1

Differentiate both sides of the equation.

$\frac{d}{d x} (y) = \frac{d}{d x} (\frac{{(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3}}{{(e^{x} + 1)}^{7}})$

Step 2

The derivative of $y$ with respect to $x$ is $y'$ .

$y'$

Step 3

Differentiate the right side of the equation.

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Step 3.1

Differentiate using the Quotient Rule which states that $\frac{d}{d x} [\frac{f (x)}{g (x)}]$ is $\frac{g (x) \frac{d}{d x} [f (x)] - f (x) \frac{d}{d x} [g (x)]}{{g (x)}^{2}}$ where $f (x) = {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3}$ and $g (x) = {(e^{x} + 1)}^{7}$ .

$\frac{{(e^{x} + 1)}^{7} \frac{d}{d x} [{(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3}] - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{({(e^{x} + 1)}^{7})}^{2}}$

Step 3.2

Multiply the exponents in ${({(e^{x} + 1)}^{7})}^{2}$ .

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Step 3.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{{(e^{x} + 1)}^{7} \frac{d}{d x} [{(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3}] - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{7 \cdot 2}}$

Step 3.2.2

Multiply $7$ by $2$ .

$\frac{{(e^{x} + 1)}^{7} \frac{d}{d x} [{(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3}] - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.3

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = {(x^{2} + 1)}^{10}$ and $g (x) = {(x^{2} + 2)}^{3}$ .

$\frac{{(e^{x} + 1)}^{7} ({(x^{2} + 1)}^{10} \frac{d}{d x} [{(x^{2} + 2)}^{3}] + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{3}$ and $g (x) = x^{2} + 2$ .

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Step 3.4.1

To apply the Chain Rule, set $u_{1}$ as $x^{2} + 2$ .

$\frac{{(e^{x} + 1)}^{7} ({(x^{2} + 1)}^{10} (\frac{d}{d u_{1}} [{u_{1}}^{3}] \frac{d}{d x} [x^{2} + 2]) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.4.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{1}} [{u_{1}}^{n}]$ is $n {u_{1}}^{n - 1}$ where $n = 3$ .

$\frac{{(e^{x} + 1)}^{7} ({(x^{2} + 1)}^{10} (3 {u_{1}}^{2} \frac{d}{d x} [x^{2} + 2]) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.4.3

Replace all occurrences of $u_{1}$ with $x^{2} + 2$ .

$\frac{{(e^{x} + 1)}^{7} ({(x^{2} + 1)}^{10} (3 {(x^{2} + 2)}^{2} \frac{d}{d x} [x^{2} + 2]) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.5

Differentiate.

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Step 3.5.1

Move $3$ to the left of ${(x^{2} + 1)}^{10}$ .

$\frac{{(e^{x} + 1)}^{7} (3 \cdot {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} \frac{d}{d x} [x^{2} + 2] + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.5.2

By the Sum Rule, the derivative of $x^{2} + 2$ with respect to $x$ is $\frac{d}{d x} [x^{2}] + \frac{d}{d x} [2]$ .

$\frac{{(e^{x} + 1)}^{7} (3 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} (\frac{d}{d x} [x^{2}] + \frac{d}{d x} [2]) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.5.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 2$ .

$\frac{{(e^{x} + 1)}^{7} (3 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} (2 x + \frac{d}{d x} [2]) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.5.4

Since $2$ is constant with respect to $x$ , the derivative of $2$ with respect to $x$ is $0$ .

$\frac{{(e^{x} + 1)}^{7} (3 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} (2 x + 0) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.5.5

Simplify the expression.

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Step 3.5.5.1

Add $2 x$ and $0$ .

$\frac{{(e^{x} + 1)}^{7} (3 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} (2 x) + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.5.5.2

Multiply $2$ by $3$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + {(x^{2} + 2)}^{3} \frac{d}{d x} [{(x^{2} + 1)}^{10}]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.6

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{10}$ and $g (x) = x^{2} + 1$ .

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Step 3.6.1

To apply the Chain Rule, set $u_{2}$ as $x^{2} + 1$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + {(x^{2} + 2)}^{3} (\frac{d}{d u_{2}} [{u_{2}}^{10}] \frac{d}{d x} [x^{2} + 1])) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.6.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{2}} [{u_{2}}^{n}]$ is $n {u_{2}}^{n - 1}$ where $n = 10$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + {(x^{2} + 2)}^{3} (10 {u_{2}}^{9} \frac{d}{d x} [x^{2} + 1])) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.6.3

Replace all occurrences of $u_{2}$ with $x^{2} + 1$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + {(x^{2} + 2)}^{3} (10 {(x^{2} + 1)}^{9} \frac{d}{d x} [x^{2} + 1])) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.7

Differentiate.

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Step 3.7.1

Move $10$ to the left of ${(x^{2} + 2)}^{3}$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 10 \cdot {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} \frac{d}{d x} [x^{2} + 1]) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.7.2

By the Sum Rule, the derivative of $x^{2} + 1$ with respect to $x$ is $\frac{d}{d x} [x^{2}] + \frac{d}{d x} [1]$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 10 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} (\frac{d}{d x} [x^{2}] + \frac{d}{d x} [1])) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.7.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 2$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 10 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} (2 x + \frac{d}{d x} [1])) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.7.4

Since $1$ is constant with respect to $x$ , the derivative of $1$ with respect to $x$ is $0$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 10 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} (2 x + 0)) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.7.5

Simplify the expression.

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Step 3.7.5.1

Add $2 x$ and $0$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 10 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} (2 x)) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.7.5.2

Multiply $2$ by $10$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} \frac{d}{d x} [{(e^{x} + 1)}^{7}]}{{(e^{x} + 1)}^{14}}$

Step 3.8

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{7}$ and $g (x) = e^{x} + 1$ .

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Step 3.8.1

To apply the Chain Rule, set $u_{3}$ as $e^{x} + 1$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (\frac{d}{d u_{3}} [{u_{3}}^{7}] \frac{d}{d x} [e^{x} + 1])}{{(e^{x} + 1)}^{14}}$

Step 3.8.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{3}} [{u_{3}}^{n}]$ is $n {u_{3}}^{n - 1}$ where $n = 7$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (7 {u_{3}}^{6} \frac{d}{d x} [e^{x} + 1])}{{(e^{x} + 1)}^{14}}$

Step 3.8.3

Replace all occurrences of $u_{3}$ with $e^{x} + 1$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (7 {(e^{x} + 1)}^{6} \frac{d}{d x} [e^{x} + 1])}{{(e^{x} + 1)}^{14}}$

Step 3.9

Simplify with factoring out.

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Step 3.9.1

Multiply $7$ by $- 1$ .

$\frac{{(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} ({(e^{x} + 1)}^{6} \frac{d}{d x} [e^{x} + 1])}{{(e^{x} + 1)}^{14}}$

Step 3.9.2

Factor ${(e^{x} + 1)}^{6}$ out of ${(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} ({(e^{x} + 1)}^{6} \frac{d}{d x} [e^{x} + 1])$ .

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Step 3.9.2.1

Factor ${(e^{x} + 1)}^{6}$ out of ${(e^{x} + 1)}^{7} (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x)$ .

$\frac{{(e^{x} + 1)}^{6} ((e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x)) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} ({(e^{x} + 1)}^{6} \frac{d}{d x} [e^{x} + 1])}{{(e^{x} + 1)}^{14}}$

Step 3.9.2.2

Factor ${(e^{x} + 1)}^{6}$ out of $- 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} ({(e^{x} + 1)}^{6} \frac{d}{d x} [e^{x} + 1])$ .

$\frac{{(e^{x} + 1)}^{6} ((e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x)) + {(e^{x} + 1)}^{6} (- 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (\frac{d}{d x} [e^{x} + 1]))}{{(e^{x} + 1)}^{14}}$

Step 3.9.2.3

Factor ${(e^{x} + 1)}^{6}$ out of ${(e^{x} + 1)}^{6} ((e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x)) + {(e^{x} + 1)}^{6} (- 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (\frac{d}{d x} [e^{x} + 1]))$ .

$\frac{{(e^{x} + 1)}^{6} ((e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (\frac{d}{d x} [e^{x} + 1]))}{{(e^{x} + 1)}^{14}}$

Step 3.10

Cancel the common factors.

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Step 3.10.1

Factor ${(e^{x} + 1)}^{6}$ out of ${(e^{x} + 1)}^{14}$ .

Step 3.10.2

Cancel the common factor.

Step 3.10.3

Rewrite the expression.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (\frac{d}{d x} [e^{x} + 1])}{{(e^{x} + 1)}^{8}}$

Step 3.11

By the Sum Rule, the derivative of $e^{x} + 1$ with respect to $x$ is $\frac{d}{d x} [e^{x}] + \frac{d}{d x} [1]$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (\frac{d}{d x} [e^{x}] + \frac{d}{d x} [1])}{{(e^{x} + 1)}^{8}}$

Step 3.12

Differentiate using the Exponential Rule which states that $\frac{d}{d x} [a^{x}]$ is $a^{x} \ln (a)$ where $a$ = $e$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (e^{x} + \frac{d}{d x} [1])}{{(e^{x} + 1)}^{8}}$

Step 3.13

Differentiate using the Constant Rule.

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Step 3.13.1

Since $1$ is constant with respect to $x$ , the derivative of $1$ with respect to $x$ is $0$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} (e^{x} + 0)}{{(e^{x} + 1)}^{8}}$

Step 3.13.2

Add $e^{x}$ and $0$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{2} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14

Simplify the numerator.

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Step 3.14.1

Simplify each term.

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Step 3.14.1.1

Rewrite ${(x^{2} + 2)}^{2}$ as $(x^{2} + 2) (x^{2} + 2)$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} ((x^{2} + 2) (x^{2} + 2)) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.2

Expand $(x^{2} + 2) (x^{2} + 2)$ using the FOIL Method.

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Step 3.14.1.2.1

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{2} (x^{2} + 2) + 2 (x^{2} + 2)) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.2.2

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{2} x^{2} + x^{2} \cdot 2 + 2 (x^{2} + 2)) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.2.3

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{2} x^{2} + x^{2} \cdot 2 + 2 x^{2} + 2 \cdot 2) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.3

Simplify and combine like terms.

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Step 3.14.1.3.1

Simplify each term.

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Step 3.14.1.3.1.1

Multiply $x^{2}$ by $x^{2}$ by adding the exponents.

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Step 3.14.1.3.1.1.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{2 + 2} + x^{2} \cdot 2 + 2 x^{2} + 2 \cdot 2) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.3.1.1.2

Add $2$ and $2$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{4} + x^{2} \cdot 2 + 2 x^{2} + 2 \cdot 2) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.3.1.2

Move $2$ to the left of $x^{2}$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{4} + 2 \cdot x^{2} + 2 x^{2} + 2 \cdot 2) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.3.1.3

Multiply $2$ by $2$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{4} + 2 x^{2} + 2 x^{2} + 4) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.3.2

Add $2 x^{2}$ and $2 x^{2}$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{4} + 4 x^{2} + 4) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.4

Apply the distributive property.

$\frac{(e^{x} + 1) ((6 {(x^{2} + 1)}^{10} x^{4} + 6 {(x^{2} + 1)}^{10} (4 x^{2}) + 6 {(x^{2} + 1)}^{10} \cdot 4) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.5

Simplify.

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Step 3.14.1.5.1

Rewrite using the commutative property of multiplication.

$\frac{(e^{x} + 1) ((6 {(x^{2} + 1)}^{10} x^{4} + 6 \cdot 4 {(x^{2} + 1)}^{10} x^{2} + 6 {(x^{2} + 1)}^{10} \cdot 4) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.5.2

Multiply $4$ by $6$ .

$\frac{(e^{x} + 1) ((6 {(x^{2} + 1)}^{10} x^{4} + 6 \cdot 4 {(x^{2} + 1)}^{10} x^{2} + 24 {(x^{2} + 1)}^{10}) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.6

Multiply $6$ by $4$ .

$\frac{(e^{x} + 1) ((6 {(x^{2} + 1)}^{10} x^{4} + 24 {(x^{2} + 1)}^{10} x^{2} + 24 {(x^{2} + 1)}^{10}) x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.7

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{4} x + 24 {(x^{2} + 1)}^{10} x^{2} x + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8

Simplify.

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Step 3.14.1.8.1

Multiply $x^{4}$ by $x$ by adding the exponents.

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Step 3.14.1.8.1.1

Move $x$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x \cdot x^{4}) + 24 {(x^{2} + 1)}^{10} x^{2} x + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.1.2

Multiply $x$ by $x^{4}$ .

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Step 3.14.1.8.1.2.1

Raise $x$ to the power of $1$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} (x^{1} x^{4}) + 24 {(x^{2} + 1)}^{10} x^{2} x + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{1 + 4} + 24 {(x^{2} + 1)}^{10} x^{2} x + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.1.3

Add $1$ and $4$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{2} x + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.2

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 3.14.1.8.2.1

Move $x$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} (x \cdot x^{2}) + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.2.2

Multiply $x$ by $x^{2}$ .

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Step 3.14.1.8.2.2.1

Raise $x$ to the power of $1$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} (x^{1} x^{2}) + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{1 + 2} + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.8.2.3

Add $1$ and $2$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 {(x^{2} + 2)}^{3} {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.9

Use the Binomial Theorem.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 ({(x^{2})}^{3} + 3 {(x^{2})}^{2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10

Simplify each term.

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Step 3.14.1.10.1

Multiply the exponents in ${(x^{2})}^{3}$ .

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Step 3.14.1.10.1.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{2 \cdot 3} + 3 {(x^{2})}^{2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.1.2

Multiply $2$ by $3$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 3 {(x^{2})}^{2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.2

Multiply the exponents in ${(x^{2})}^{2}$ .

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Step 3.14.1.10.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 3 x^{2 \cdot 2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.2.2

Multiply $2$ by $2$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 3 x^{4} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.3

Multiply $2$ by $3$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 6 x^{4} + 3 x^{2} \cdot 2^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.4

Raise $2$ to the power of $2$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 6 x^{4} + 3 x^{2} \cdot 4 + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.5

Multiply $4$ by $3$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 6 x^{4} + 12 x^{2} + 2^{3}) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.10.6

Raise $2$ to the power of $3$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{6} + 6 x^{4} + 12 x^{2} + 8) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.11

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + (20 x^{6} + 20 (6 x^{4}) + 20 (12 x^{2}) + 20 \cdot 8) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.12

Simplify.

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Step 3.14.1.12.1

Multiply $6$ by $20$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + (20 x^{6} + 120 x^{4} + 20 (12 x^{2}) + 20 \cdot 8) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.12.2

Multiply $12$ by $20$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + (20 x^{6} + 120 x^{4} + 240 x^{2} + 20 \cdot 8) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.12.3

Multiply $20$ by $8$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + (20 x^{6} + 120 x^{4} + 240 x^{2} + 160) {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.13

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + (20 x^{6} {(x^{2} + 1)}^{9} + 120 x^{4} {(x^{2} + 1)}^{9} + 240 x^{2} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9}) x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.14

Apply the distributive property.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{6} {(x^{2} + 1)}^{9} x + 120 x^{4} {(x^{2} + 1)}^{9} x + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15

Simplify.

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Step 3.14.1.15.1

Multiply $x^{6}$ by $x$ by adding the exponents.

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Step 3.14.1.15.1.1

Move $x$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x \cdot x^{6}) {(x^{2} + 1)}^{9} + 120 x^{4} {(x^{2} + 1)}^{9} x + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.1.2

Multiply $x$ by $x^{6}$ .

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Step 3.14.1.15.1.2.1

Raise $x$ to the power of $1$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 (x^{1} x^{6}) {(x^{2} + 1)}^{9} + 120 x^{4} {(x^{2} + 1)}^{9} x + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{1 + 6} {(x^{2} + 1)}^{9} + 120 x^{4} {(x^{2} + 1)}^{9} x + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.1.3

Add $1$ and $6$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{4} {(x^{2} + 1)}^{9} x + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.2

Multiply $x^{4}$ by $x$ by adding the exponents.

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Step 3.14.1.15.2.1

Move $x$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 (x \cdot x^{4}) {(x^{2} + 1)}^{9} + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.2.2

Multiply $x$ by $x^{4}$ .

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Step 3.14.1.15.2.2.1

Raise $x$ to the power of $1$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 (x^{1} x^{4}) {(x^{2} + 1)}^{9} + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{1 + 4} {(x^{2} + 1)}^{9} + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.2.3

Add $1$ and $4$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{2} {(x^{2} + 1)}^{9} x + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.3

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 3.14.1.15.3.1

Move $x$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 (x \cdot x^{2}) {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.3.2

Multiply $x$ by $x^{2}$ .

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Step 3.14.1.15.3.2.1

Raise $x$ to the power of $1$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 (x^{1} x^{2}) {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.3.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{1 + 2} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.1.15.3.3

Add $1$ and $2$ .

$\frac{(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.2

Expand $(e^{x} + 1) (6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x)$ by multiplying each term in the first expression by each term in the second expression.

$\frac{e^{x} (6 {(x^{2} + 1)}^{10} x^{5}) + e^{x} (24 {(x^{2} + 1)}^{10} x^{3}) + e^{x} (24 {(x^{2} + 1)}^{10} x) + e^{x} (20 x^{7} {(x^{2} + 1)}^{9}) + e^{x} (120 x^{5} {(x^{2} + 1)}^{9}) + e^{x} (240 x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3

Simplify each term.

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Step 3.14.3.1

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + e^{x} (24 {(x^{2} + 1)}^{10} x^{3}) + e^{x} (24 {(x^{2} + 1)}^{10} x) + e^{x} (20 x^{7} {(x^{2} + 1)}^{9}) + e^{x} (120 x^{5} {(x^{2} + 1)}^{9}) + e^{x} (240 x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.2

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + e^{x} (24 {(x^{2} + 1)}^{10} x) + e^{x} (20 x^{7} {(x^{2} + 1)}^{9}) + e^{x} (120 x^{5} {(x^{2} + 1)}^{9}) + e^{x} (240 x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.3

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + e^{x} (20 x^{7} {(x^{2} + 1)}^{9}) + e^{x} (120 x^{5} {(x^{2} + 1)}^{9}) + e^{x} (240 x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.4

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + e^{x} (120 x^{5} {(x^{2} + 1)}^{9}) + e^{x} (240 x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.5

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + e^{x} (240 x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.6

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + e^{x} (160 {(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.7

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 1 (6 {(x^{2} + 1)}^{10} x^{5}) + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.8

Multiply $6 {(x^{2} + 1)}^{10} x^{5}$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 1 (24 {(x^{2} + 1)}^{10} x^{3}) + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.9

Multiply $24 {(x^{2} + 1)}^{10} x^{3}$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 1 (24 {(x^{2} + 1)}^{10} x) + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.10

Multiply $24 {(x^{2} + 1)}^{10} x$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 1 (20 x^{7} {(x^{2} + 1)}^{9}) + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.11

Multiply $20 x^{7} {(x^{2} + 1)}^{9}$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 1 (120 x^{5} {(x^{2} + 1)}^{9}) + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.12

Multiply $120 x^{5} {(x^{2} + 1)}^{9}$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 1 (240 x^{3} {(x^{2} + 1)}^{9}) + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.13

Multiply $240 x^{3} {(x^{2} + 1)}^{9}$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 1 (160 {(x^{2} + 1)}^{9} x) - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.3.14

Multiply $160 {(x^{2} + 1)}^{9} x$ by $1$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} {(x^{2} + 2)}^{3} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.4

Use the Binomial Theorem.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} ({(x^{2})}^{3} + 3 {(x^{2})}^{2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5

Simplify each term.

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Step 3.14.5.1

Multiply the exponents in ${(x^{2})}^{3}$ .

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Step 3.14.5.1.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{2 \cdot 3} + 3 {(x^{2})}^{2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.1.2

Multiply $2$ by $3$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 3 {(x^{2})}^{2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.2

Multiply the exponents in ${(x^{2})}^{2}$ .

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Step 3.14.5.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 3 x^{2 \cdot 2} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.2.2

Multiply $2$ by $2$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 3 x^{4} \cdot 2 + 3 x^{2} \cdot 2^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.3

Multiply $2$ by $3$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 6 x^{4} + 3 x^{2} \cdot 2^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.4

Raise $2$ to the power of $2$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 6 x^{4} + 3 x^{2} \cdot 4 + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.5

Multiply $4$ by $3$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 6 x^{4} + 12 x^{2} + 2^{3}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.5.6

Raise $2$ to the power of $3$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} (x^{6} + 6 x^{4} + 12 x^{2} + 8) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.6

Apply the distributive property.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x + (- 7 {(x^{2} + 1)}^{10} x^{6} - 7 {(x^{2} + 1)}^{10} (6 x^{4}) - 7 {(x^{2} + 1)}^{10} (12 x^{2}) - 7 {(x^{2} + 1)}^{10} \cdot 8) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.7

Simplify.

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Step 3.14.7.1

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x + (- 7 {(x^{2} + 1)}^{10} x^{6} - 7 \cdot 6 {(x^{2} + 1)}^{10} x^{4} - 7 {(x^{2} + 1)}^{10} (12 x^{2}) - 7 {(x^{2} + 1)}^{10} \cdot 8) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.7.2

Rewrite using the commutative property of multiplication.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x + (- 7 {(x^{2} + 1)}^{10} x^{6} - 7 \cdot 6 {(x^{2} + 1)}^{10} x^{4} - 7 \cdot 12 {(x^{2} + 1)}^{10} x^{2} - 7 {(x^{2} + 1)}^{10} \cdot 8) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.7.3

Multiply $8$ by $- 7$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x + (- 7 {(x^{2} + 1)}^{10} x^{6} - 7 \cdot 6 {(x^{2} + 1)}^{10} x^{4} - 7 \cdot 12 {(x^{2} + 1)}^{10} x^{2} - 56 {(x^{2} + 1)}^{10}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.8

Simplify each term.

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Step 3.14.8.1

Multiply $- 7$ by $6$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x + (- 7 {(x^{2} + 1)}^{10} x^{6} - 42 {(x^{2} + 1)}^{10} x^{4} - 7 \cdot 12 {(x^{2} + 1)}^{10} x^{2} - 56 {(x^{2} + 1)}^{10}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.8.2

Multiply $- 7$ by $12$ .

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x + (- 7 {(x^{2} + 1)}^{10} x^{6} - 42 {(x^{2} + 1)}^{10} x^{4} - 84 {(x^{2} + 1)}^{10} x^{2} - 56 {(x^{2} + 1)}^{10}) e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.9

Apply the distributive property.

$\frac{6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10

Rewrite $6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}$ in a factored form.

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Step 3.14.10.1

Factor ${(x^{2} + 1)}^{9}$ out of $6 e^{x} ({(x^{2} + 1)}^{10} x^{5}) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}$ .

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Step 3.14.10.1.1

Factor ${(x^{2} + 1)}^{9}$ out of $6 e^{x} ({(x^{2} + 1)}^{10} x^{5})$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + 24 e^{x} ({(x^{2} + 1)}^{10} x^{3}) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.2

Factor ${(x^{2} + 1)}^{9}$ out of $24 e^{x} ({(x^{2} + 1)}^{10} x^{3})$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + 24 e^{x} ({(x^{2} + 1)}^{10} x) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.3

Factor ${(x^{2} + 1)}^{9}$ out of $24 e^{x} ({(x^{2} + 1)}^{10} x)$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + 20 e^{x} (x^{7} {(x^{2} + 1)}^{9}) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.4

Factor ${(x^{2} + 1)}^{9}$ out of $20 e^{x} (x^{7} {(x^{2} + 1)}^{9})$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + 120 e^{x} (x^{5} {(x^{2} + 1)}^{9}) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.5

Factor ${(x^{2} + 1)}^{9}$ out of $120 e^{x} (x^{5} {(x^{2} + 1)}^{9})$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + 240 e^{x} (x^{3} {(x^{2} + 1)}^{9}) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.6

Factor ${(x^{2} + 1)}^{9}$ out of $240 e^{x} (x^{3} {(x^{2} + 1)}^{9})$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + 160 e^{x} ({(x^{2} + 1)}^{9} x) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.7

Factor ${(x^{2} + 1)}^{9}$ out of $160 e^{x} ({(x^{2} + 1)}^{9} x)$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + 6 {(x^{2} + 1)}^{10} x^{5} + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.8

Factor ${(x^{2} + 1)}^{9}$ out of $6 {(x^{2} + 1)}^{10} x^{5}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + 24 {(x^{2} + 1)}^{10} x^{3} + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.9

Factor ${(x^{2} + 1)}^{9}$ out of $24 {(x^{2} + 1)}^{10} x^{3}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + 24 {(x^{2} + 1)}^{10} x + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.10

Factor ${(x^{2} + 1)}^{9}$ out of $24 {(x^{2} + 1)}^{10} x$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + 20 x^{7} {(x^{2} + 1)}^{9} + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.11

Factor ${(x^{2} + 1)}^{9}$ out of $20 x^{7} {(x^{2} + 1)}^{9}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + 120 x^{5} {(x^{2} + 1)}^{9} + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.12

Factor ${(x^{2} + 1)}^{9}$ out of $120 x^{5} {(x^{2} + 1)}^{9}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + 240 x^{3} {(x^{2} + 1)}^{9} + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.13

Factor ${(x^{2} + 1)}^{9}$ out of $240 x^{3} {(x^{2} + 1)}^{9}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + 160 {(x^{2} + 1)}^{9} x - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.14

Factor ${(x^{2} + 1)}^{9}$ out of $160 {(x^{2} + 1)}^{9} x$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) - 7 {(x^{2} + 1)}^{10} x^{6} e^{x} - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.15

Factor ${(x^{2} + 1)}^{9}$ out of $- 7 {(x^{2} + 1)}^{10} x^{6} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) - 42 {(x^{2} + 1)}^{10} x^{4} e^{x} - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.16

Factor ${(x^{2} + 1)}^{9}$ out of $- 42 {(x^{2} + 1)}^{10} x^{4} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) - 84 {(x^{2} + 1)}^{10} x^{2} e^{x} - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.17

Factor ${(x^{2} + 1)}^{9}$ out of $- 84 {(x^{2} + 1)}^{10} x^{2} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) - 56 {(x^{2} + 1)}^{10} e^{x}}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.18

Factor ${(x^{2} + 1)}^{9}$ out of $- 56 {(x^{2} + 1)}^{10} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.19

Factor ${(x^{2} + 1)}^{9}$ out of ${(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x^{3}))$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.20

Factor ${(x^{2} + 1)}^{9}$ out of ${(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3})) + {(x^{2} + 1)}^{9} (24 e^{x} ((x^{2} + 1) x))$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.21

Factor ${(x^{2} + 1)}^{9}$ out of ${(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x)) + {(x^{2} + 1)}^{9} (20 e^{x} (x^{7}))$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.22

Factor ${(x^{2} + 1)}^{9}$ out of ${(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7})) + {(x^{2} + 1)}^{9} (120 e^{x} (x^{5}))$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.23

Factor ${(x^{2} + 1)}^{9}$ out of ${(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5})) + {(x^{2} + 1)}^{9} (240 e^{x} (x^{3}))$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3})) + {(x^{2} + 1)}^{9} (160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.24

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x)) + {(x^{2} + 1)}^{9} (6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.25

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.26

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3}) + {(x^{2} + 1)}^{9} (24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.27

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x) + {(x^{2} + 1)}^{9} (20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.28

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.29

Factor ${(x^{2} + 1)}^{9}$ out of ${(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7}) + {(x^{2} + 1)}^{9} (120 x^{5})$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5}) + {(x^{2} + 1)}^{9} (240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.30

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3}) + {(x^{2} + 1)}^{9} (160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.31

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x) + {(x^{2} + 1)}^{9} (- 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.32

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x}) + {(x^{2} + 1)}^{9} (- 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.33

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x}) + {(x^{2} + 1)}^{9} (- 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.34

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} ((x^{2} + 1) x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x}) + {(x^{2} + 1)}^{9} (- 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.1.35

Step 3.14.10.2

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} (x^{2} x^{5} + 1 x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.3

Multiply $x^{2}$ by $x^{5}$ by adding the exponents.

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Step 3.14.10.3.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} (x^{2 + 5} + 1 x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.3.2

Add $2$ and $5$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} (x^{7} + 1 x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.4

Multiply $x^{5}$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} (x^{7} + x^{5}) + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.5

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} ((x^{2} + 1) x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.6

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} (x^{2} x^{3} + 1 x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.7

Multiply $x^{2}$ by $x^{3}$ by adding the exponents.

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Step 3.14.10.7.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} (x^{2 + 3} + 1 x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.7.2

Add $2$ and $3$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} (x^{5} + 1 x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.8

Multiply $x^{3}$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} (x^{5} + x^{3}) + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.9

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} ((x^{2} + 1) x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.10

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} (x^{2} x + 1 x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.11

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 3.14.10.11.1

Multiply $x^{2}$ by $x$ .

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Step 3.14.10.11.1.1

Raise $x$ to the power of $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} (x^{2} x^{1} + 1 x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.11.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} (x^{2 + 1} + 1 x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.11.2

Add $2$ and $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} (x^{3} + 1 x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.12

Multiply $x$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} (x^{3} + x) + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.13

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{2} + 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.14

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + (6 x^{2} + 6 \cdot 1) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.15

Multiply $6$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + (6 x^{2} + 6) x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.16

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{2} x^{5} + 6 x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.17

Multiply $x^{2}$ by $x^{5}$ by adding the exponents.

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Step 3.14.10.17.1

Move $x^{5}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 (x^{5} x^{2}) + 6 x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.17.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{5 + 2} + 6 x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.17.3

Add $5$ and $2$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 (x^{2} + 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.18

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + (24 x^{2} + 24 \cdot 1) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.19

Multiply $24$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + (24 x^{2} + 24) x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.20

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{2} x^{3} + 24 x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.21

Multiply $x^{2}$ by $x^{3}$ by adding the exponents.

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Step 3.14.10.21.1

Move $x^{3}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 (x^{3} x^{2}) + 24 x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.21.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{3 + 2} + 24 x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.21.3

Add $3$ and $2$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 (x^{2} + 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.22

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + (24 x^{2} + 24 \cdot 1) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.23

Multiply $24$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + (24 x^{2} + 24) x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.24

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{2} x + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.25

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 3.14.10.25.1

Move $x$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 (x \cdot x^{2}) + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.25.2

Multiply $x$ by $x^{2}$ .

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Step 3.14.10.25.2.1

Raise $x$ to the power of $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 (x^{1} x^{2}) + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.25.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{1 + 2} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.25.3

Add $1$ and $2$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 (x^{2} + 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.26

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x + (- 7 x^{2} - 7 \cdot 1) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.27

Multiply $- 7$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x + (- 7 x^{2} - 7) x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.28

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x + (- 7 x^{2} x^{6} - 7 x^{6}) e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.29

Multiply $x^{2}$ by $x^{6}$ by adding the exponents.

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Step 3.14.10.29.1

Move $x^{6}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x + (- 7 (x^{6} x^{2}) - 7 x^{6}) e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.29.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x + (- 7 x^{6 + 2} - 7 x^{6}) e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.29.3

Add $6$ and $2$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x + (- 7 x^{8} - 7 x^{6}) e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.30

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 (x^{2} + 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.31

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} + (- 42 x^{2} - 42 \cdot 1) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.32

Multiply $- 42$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} + (- 42 x^{2} - 42) x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.33

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} + (- 42 x^{2} x^{4} - 42 x^{4}) e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.34

Multiply $x^{2}$ by $x^{4}$ by adding the exponents.

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Step 3.14.10.34.1

Move $x^{4}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} + (- 42 (x^{4} x^{2}) - 42 x^{4}) e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.34.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} + (- 42 x^{4 + 2} - 42 x^{4}) e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.34.3

Add $4$ and $2$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} + (- 42 x^{6} - 42 x^{4}) e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.35

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 (x^{2} + 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.36

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} + (- 84 x^{2} - 84 \cdot 1) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.37

Multiply $- 84$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} + (- 84 x^{2} - 84) x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.38

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} + (- 84 x^{2} x^{2} - 84 x^{2}) e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.39

Multiply $x^{2}$ by $x^{2}$ by adding the exponents.

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Step 3.14.10.39.1

Move $x^{2}$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} + (- 84 (x^{2} x^{2}) - 84 x^{2}) e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.39.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} + (- 84 x^{2 + 2} - 84 x^{2}) e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.39.3

Add $2$ and $2$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} + (- 84 x^{4} - 84 x^{2}) e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.40

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 (x^{2} + 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.41

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} + (- 56 x^{2} - 56 \cdot 1) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.42

Multiply $- 56$ by $1$ .

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} + (- 56 x^{2} - 56) e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.43

Apply the distributive property.

$\frac{{(x^{2} + 1)}^{9} (6 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 20 e^{x} (x^{7}) + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.44

Add $6 e^{x} x^{7}$ and $20 e^{x} (x^{7})$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 6 e^{x} x^{5} + 24 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.45

Add $6 e^{x} x^{5}$ and $24 e^{x} x^{5}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 30 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 120 e^{x} (x^{5}) + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.46

Add $30 e^{x} x^{5}$ and $120 e^{x} (x^{5})$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 24 e^{x} x^{3} + 24 e^{x} x^{3} + 24 e^{x} x + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.47

Add $24 e^{x} x^{3}$ and $24 e^{x} x^{3}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 48 e^{x} x^{3} + 24 e^{x} x + 240 e^{x} (x^{3}) + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.48

Add $48 e^{x} x^{3}$ and $240 e^{x} (x^{3})$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 24 e^{x} x + 160 e^{x} (x) + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.49

Add $24 e^{x} x$ and $160 e^{x} (x)$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 6 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 20 x^{7} + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.50

Add $6 x^{7}$ and $20 x^{7}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 6 x^{5} + 24 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.51

Add $6 x^{5}$ and $24 x^{5}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 30 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 120 x^{5} + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.52

Add $30 x^{5}$ and $120 x^{5}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 24 x^{3} + 24 x^{3} + 24 x + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.53

Add $24 x^{3}$ and $24 x^{3}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 48 x^{3} + 24 x + 240 x^{3} + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.54

Add $48 x^{3}$ and $240 x^{3}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 288 x^{3} + 24 x + 160 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.55

Add $24 x$ and $160 x$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 288 x^{3} + 184 x - 7 x^{8} e^{x} - 7 x^{6} e^{x} - 42 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.56

Subtract $42 x^{6} e^{x}$ from $- 7 x^{6} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 288 x^{3} + 184 x - 7 x^{8} e^{x} - 49 x^{6} e^{x} - 42 x^{4} e^{x} - 84 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.57

Subtract $84 x^{4} e^{x}$ from $- 42 x^{4} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 288 x^{3} + 184 x - 7 x^{8} e^{x} - 49 x^{6} e^{x} - 126 x^{4} e^{x} - 84 x^{2} e^{x} - 56 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.58

Subtract $56 x^{2} e^{x}$ from $- 84 x^{2} e^{x}$ .

$\frac{{(x^{2} + 1)}^{9} (26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x + 26 x^{7} + 150 x^{5} + 288 x^{3} + 184 x - 7 x^{8} e^{x} - 49 x^{6} e^{x} - 126 x^{4} e^{x} - 140 x^{2} e^{x} - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 3.14.10.59

Reorder terms.

$\frac{{(x^{2} + 1)}^{9} (26 x^{7} + 150 x^{5} + 288 x^{3} + 26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x - 7 e^{x} x^{8} - 49 e^{x} x^{6} - 126 e^{x} x^{4} - 140 e^{x} x^{2} + 184 x - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 4

Reform the equation by setting the left side equal to the right side.

$y' = \frac{{(x^{2} + 1)}^{9} (26 x^{7} + 150 x^{5} + 288 x^{3} + 26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x - 7 e^{x} x^{8} - 49 e^{x} x^{6} - 126 e^{x} x^{4} - 140 e^{x} x^{2} + 184 x - 56 e^{x})}{{(e^{x} + 1)}^{8}}$

Step 5

Replace $y'$ with $\frac{d y}{d x}$ .

$\frac{d y}{d x} = \frac{{(x^{2} + 1)}^{9} (26 x^{7} + 150 x^{5} + 288 x^{3} + 26 e^{x} x^{7} + 150 e^{x} x^{5} + 288 e^{x} x^{3} + 184 e^{x} x - 7 e^{x} x^{8} - 49 e^{x} x^{6} - 126 e^{x} x^{4} - 140 e^{x} x^{2} + 184 x - 56 e^{x})}{{(e^{x} + 1)}^{8}}$