Calculus Examples

$y = \frac{(2 x^{4} - 1) (b x^{5} + 3)}{x^{5}}$

Step 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 $f (x) = (2 x^{4} - 1) (b x^{5} + 3)$ and $g (x) = x^{5}$ .

$\frac{x^{5} \frac{d}{d x} [(2 x^{4} - 1) (b x^{5} + 3)] - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{{(x^{5})}^{2}}$

Step 2

Multiply the exponents in ${(x^{5})}^{2}$ .

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Step 2.1

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

$\frac{x^{5} \frac{d}{d x} [(2 x^{4} - 1) (b x^{5} + 3)] - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{5 \cdot 2}}$

Step 2.2

Multiply $5$ by $2$ .

$\frac{x^{5} \frac{d}{d x} [(2 x^{4} - 1) (b x^{5} + 3)] - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 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 $f (x) = 2 x^{4} - 1$ and $g (x) = b x^{5} + 3$ .

$\frac{x^{5} ((2 x^{4} - 1) \frac{d}{d x} [b x^{5} + 3] + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4

Differentiate.

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Step 4.1

By the Sum Rule, the derivative of $b x^{5} + 3$ with respect to $x$ is $\frac{d}{d x} [b x^{5}] + \frac{d}{d x} [3]$ .

$\frac{x^{5} ((2 x^{4} - 1) (\frac{d}{d x} [b x^{5}] + \frac{d}{d x} [3]) + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.2

Since $b$ is constant with respect to $x$ , the derivative of $b x^{5}$ with respect to $x$ is $b \frac{d}{d x} [x^{5}]$ .

$\frac{x^{5} ((2 x^{4} - 1) (b \frac{d}{d x} [x^{5}] + \frac{d}{d x} [3]) + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 5$ .

$\frac{x^{5} ((2 x^{4} - 1) (b (5 x^{4}) + \frac{d}{d x} [3]) + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.4

Move $5$ to the left of $b$ .

$\frac{x^{5} ((2 x^{4} - 1) (5 \cdot b x^{4} + \frac{d}{d x} [3]) + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.5

Since $3$ is constant with respect to $x$ , the derivative of $3$ with respect to $x$ is $0$ .

$\frac{x^{5} ((2 x^{4} - 1) (5 b x^{4} + 0) + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.6

Simplify the expression.

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Step 4.6.1

Add $5 b x^{4}$ and $0$ .

$\frac{x^{5} ((2 x^{4} - 1) (5 b x^{4}) + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.6.2

Move $5$ to the left of $2 x^{4} - 1$ .

$\frac{x^{5} (5 \cdot (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) \frac{d}{d x} [2 x^{4} - 1]) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.7

By the Sum Rule, the derivative of $2 x^{4} - 1$ with respect to $x$ is $\frac{d}{d x} [2 x^{4}] + \frac{d}{d x} [- 1]$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) (\frac{d}{d x} [2 x^{4}] + \frac{d}{d x} [- 1])) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.8

Since $2$ is constant with respect to $x$ , the derivative of $2 x^{4}$ with respect to $x$ is $2 \frac{d}{d x} [x^{4}]$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) (2 \frac{d}{d x} [x^{4}] + \frac{d}{d x} [- 1])) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.9

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 4$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) (2 (4 x^{3}) + \frac{d}{d x} [- 1])) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.10

Multiply $4$ by $2$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) (8 x^{3} + \frac{d}{d x} [- 1])) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.11

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

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) (8 x^{3} + 0)) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.12

Simplify the expression.

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Step 4.12.1

Add $8 x^{3}$ and $0$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + (b x^{5} + 3) (8 x^{3})) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.12.2

Move $8$ to the left of $b x^{5} + 3$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + 8 \cdot (b x^{5} + 3) x^{3}) - (2 x^{4} - 1) (b x^{5} + 3) \frac{d}{d x} [x^{5}]}{x^{10}}$

Step 4.13

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 5$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - (2 x^{4} - 1) (b x^{5} + 3) (5 x^{4})}{x^{10}}$

Step 4.14

Simplify with factoring out.

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Step 4.14.1

Multiply $5$ by $- 1$ .

$\frac{x^{5} (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3) x^{4}}{x^{10}}$

Step 4.14.2

Factor $x^{4}$ out of $x^{5} (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3) x^{4}$ .

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Step 4.14.2.1

Factor $x^{4}$ out of $x^{5} (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3})$ .

$\frac{x^{4} (x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3})) - 5 (2 x^{4} - 1) (b x^{5} + 3) x^{4}}{x^{10}}$

Step 4.14.2.2

Factor $x^{4}$ out of $- 5 (2 x^{4} - 1) (b x^{5} + 3) x^{4}$ .

$\frac{x^{4} (x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3})) + x^{4} (- 5 (2 x^{4} - 1) (b x^{5} + 3))}{x^{10}}$

Step 4.14.2.3

Factor $x^{4}$ out of $x^{4} (x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3})) + x^{4} (- 5 (2 x^{4} - 1) (b x^{5} + 3))$ .

$\frac{x^{4} (x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3))}{x^{10}}$

Step 5

Cancel the common factors.

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Step 5.1

Factor $x^{4}$ out of $x^{10}$ .

$\frac{x^{4} (x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3))}{x^{4} x^{6}}$

Step 5.2

Cancel the common factor.

$\frac{x^{4} (x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3))}{x^{4} x^{6}}$

Step 5.3

Rewrite the expression.

$\frac{x (5 (2 x^{4} - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6

Simplify.

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Step 6.1

Apply the distributive property.

$\frac{x ((5 (2 x^{4}) + 5 \cdot - 1) b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.2

Apply the distributive property.

$\frac{x ((5 (2 x^{4}) b + 5 \cdot - 1 b) x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.3

Apply the distributive property.

$\frac{x (5 (2 x^{4}) b x^{4} + 5 \cdot - 1 b x^{4} + 8 (b x^{5} + 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.4

Apply the distributive property.

$\frac{x (5 (2 x^{4}) b x^{4} + 5 \cdot - 1 b x^{4} + (8 (b x^{5}) + 8 \cdot 3) x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.5

Apply the distributive property.

$\frac{x (5 (2 x^{4}) b x^{4} + 5 \cdot - 1 b x^{4} + 8 (b x^{5}) x^{3} + 8 \cdot 3 x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.6

Apply the distributive property.

$\frac{x (5 (2 x^{4}) b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) - 5 (2 x^{4} - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.7

Apply the distributive property.

$\frac{x (5 (2 x^{4}) b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8

Simplify the numerator.

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Step 6.8.1

Simplify each term.

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Step 6.8.1.1

Rewrite using the commutative property of multiplication.

$\frac{5 \cdot 2 x (x^{4} b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.2

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

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Step 6.8.1.2.1

Move $x^{4}$ .

$\frac{5 \cdot 2 (x^{4} x) (b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.2.2

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

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Step 6.8.1.2.2.1

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

$\frac{5 \cdot 2 (x^{4} x^{1}) (b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.2.2.2

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

$\frac{5 \cdot 2 x^{4 + 1} (b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.2.3

Add $4$ and $1$ .

$\frac{5 \cdot 2 x^{5} (b x^{4}) + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.3

Multiply $x^{5}$ by $x^{4}$ by adding the exponents.

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Step 6.8.1.3.1

Move $x^{4}$ .

$\frac{5 \cdot 2 (x^{4} x^{5}) b + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.3.2

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

$\frac{5 \cdot 2 x^{4 + 5} b + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.3.3

Add $4$ and $5$ .

$\frac{5 \cdot 2 x^{9} b + x (5 \cdot - 1 b x^{4}) + x (8 (b x^{5}) x^{3}) + x (8 \cdot 3 x^{3}) + (- 5 (2 x^{4}) - 5 \cdot - 1) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.4

Multiply $5$ by $2$ .

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

Step 6.8.1.5

Rewrite using the commutative property of multiplication.

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

Step 6.8.1.6

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

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Step 6.8.1.6.1

Move $x^{4}$ .

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

Step 6.8.1.6.2

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

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Step 6.8.1.6.2.1

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

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

Step 6.8.1.6.2.2

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

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

Step 6.8.1.6.3

Add $4$ and $1$ .

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

Step 6.8.1.7

Multiply $5$ by $- 1$ .

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

Step 6.8.1.8

Rewrite using the commutative property of multiplication.

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

Step 6.8.1.9

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

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Step 6.8.1.9.1

Move $x^{5}$ .

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

Step 6.8.1.9.2

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

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Step 6.8.1.9.2.1

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

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

Step 6.8.1.9.2.2

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

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

Step 6.8.1.9.3

Add $5$ and $1$ .

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

Step 6.8.1.10

Multiply $x^{6}$ by $x^{3}$ by adding the exponents.

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Step 6.8.1.10.1

Move $x^{3}$ .

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

Step 6.8.1.10.2

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

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

Step 6.8.1.10.3

Add $3$ and $6$ .

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

Step 6.8.1.11

Rewrite using the commutative property of multiplication.

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

Step 6.8.1.12

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

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Step 6.8.1.12.1

Move $x^{3}$ .

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

Step 6.8.1.12.2

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

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Step 6.8.1.12.2.1

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

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

Step 6.8.1.12.2.2

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

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

Step 6.8.1.12.3

Add $3$ and $1$ .

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

Step 6.8.1.13

Multiply $8$ by $3$ .

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

Step 6.8.1.14

Simplify each term.

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Step 6.8.1.14.1

Multiply $2$ by $- 5$ .

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

Step 6.8.1.14.2

Multiply $- 5$ by $- 1$ .

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} + (- 10 x^{4} + 5) (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.15

Expand $(- 10 x^{4} + 5) (b x^{5} + 3)$ using the FOIL Method.

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Step 6.8.1.15.1

Apply the distributive property.

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{4} (b x^{5} + 3) + 5 (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.15.2

Apply the distributive property.

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{4} (b x^{5}) - 10 x^{4} \cdot 3 + 5 (b x^{5} + 3)}{x^{6}}$

Step 6.8.1.15.3

Apply the distributive property.

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{4} (b x^{5}) - 10 x^{4} \cdot 3 + 5 (b x^{5}) + 5 \cdot 3}{x^{6}}$

Step 6.8.1.16

Simplify each term.

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Step 6.8.1.16.1

Multiply $x^{4}$ by $x^{5}$ by adding the exponents.

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Step 6.8.1.16.1.1

Move $x^{5}$ .

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 (x^{5} x^{4}) b - 10 x^{4} \cdot 3 + 5 (b x^{5}) + 5 \cdot 3}{x^{6}}$

Step 6.8.1.16.1.2

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

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{5 + 4} b - 10 x^{4} \cdot 3 + 5 (b x^{5}) + 5 \cdot 3}{x^{6}}$

Step 6.8.1.16.1.3

Add $5$ and $4$ .

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{9} b - 10 x^{4} \cdot 3 + 5 (b x^{5}) + 5 \cdot 3}{x^{6}}$

Step 6.8.1.16.2

Multiply $3$ by $- 10$ .

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{9} b - 30 x^{4} + 5 (b x^{5}) + 5 \cdot 3}{x^{6}}$

Step 6.8.1.16.3

Multiply $5$ by $3$ .

$\frac{10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{9} b - 30 x^{4} + 5 b x^{5} + 15}{x^{6}}$

Step 6.8.2

Combine the opposite terms in $10 x^{9} b - 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 10 x^{9} b - 30 x^{4} + 5 b x^{5} + 15$ .

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Step 6.8.2.1

Subtract $10 x^{9} b$ from $10 x^{9} b$ .

$\frac{- 5 x^{5} b + 8 x^{9} b + 24 x^{4} + 0 - 30 x^{4} + 5 b x^{5} + 15}{x^{6}}$

Step 6.8.2.2

Add $- 5 x^{5} b + 8 x^{9} b + 24 x^{4}$ and $0$ .

$\frac{- 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 30 x^{4} + 5 b x^{5} + 15}{x^{6}}$

Step 6.8.2.3

Reorder the factors in the terms $- 5 x^{5} b$ and $5 b x^{5}$ .

$\frac{- 5 x^{5} b + 8 x^{9} b + 24 x^{4} - 30 x^{4} + 5 x^{5} b + 15}{x^{6}}$

Step 6.8.2.4

Add $- 5 x^{5} b$ and $5 x^{5} b$ .

$\frac{8 x^{9} b + 24 x^{4} - 30 x^{4} + 0 + 15}{x^{6}}$

Step 6.8.2.5

Add $8 x^{9} b + 24 x^{4} - 30 x^{4}$ and $0$ .

$\frac{8 x^{9} b + 24 x^{4} - 30 x^{4} + 15}{x^{6}}$

Step 6.8.3

Subtract $30 x^{4}$ from $24 x^{4}$ .

$\frac{8 x^{9} b - 6 x^{4} + 15}{x^{6}}$

Step 6.9

Reorder terms.

$\frac{- 6 x^{4} + 8 x^{9} b + 15}{x^{6}}$

Step 6.10

Factor $- 1$ out of $- 6 x^{4}$ .

$\frac{- (6 x^{4}) + 8 x^{9} b + 15}{x^{6}}$

Step 6.11

Factor $- 1$ out of $8 x^{9} b$ .

$\frac{- (6 x^{4}) - (- 8 x^{9} b) + 15}{x^{6}}$

Step 6.12

Factor $- 1$ out of $- (6 x^{4}) - (- 8 x^{9} b)$ .

$\frac{- (6 x^{4} - 8 x^{9} b) + 15}{x^{6}}$

Step 6.13

Rewrite $15$ as $- 1 (- 15)$ .

$\frac{- (6 x^{4} - 8 x^{9} b) - 1 (- 15)}{x^{6}}$

Step 6.14

Factor $- 1$ out of $- (6 x^{4} - 8 x^{9} b) - 1 (- 15)$ .

$\frac{- (6 x^{4} - 8 x^{9} b - 15)}{x^{6}}$

Step 6.15

Rewrite $- (6 x^{4} - 8 x^{9} b - 15)$ as $- 1 (6 x^{4} - 8 x^{9} b - 15)$ .

$\frac{- 1 (6 x^{4} - 8 x^{9} b - 15)}{x^{6}}$

Step 6.16

Move the negative in front of the fraction.

$- \frac{6 x^{4} - 8 x^{9} b - 15}{x^{6}}$