Calculus Examples

$10000 (\frac{1}{x} + \frac{x}{x + 3})$

Step 1

To write $\frac{1}{x}$ as a fraction with a common denominator, multiply by $\frac{x + 3}{x + 3}$ .

$\frac{d}{d x} [10000 (\frac{1}{x} \cdot \frac{x + 3}{x + 3} + \frac{x}{x + 3})]$

Step 2

To write $\frac{x}{x + 3}$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$\frac{d}{d x} [10000 (\frac{1}{x} \cdot \frac{x + 3}{x + 3} + \frac{x}{x + 3} \cdot \frac{x}{x})]$

Step 3

Write each expression with a common denominator of $x (x + 3)$ , by multiplying each by an appropriate factor of $1$ .

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Step 3.1

Multiply $\frac{1}{x}$ by $\frac{x + 3}{x + 3}$ .

$\frac{d}{d x} [10000 (\frac{x + 3}{x (x + 3)} + \frac{x}{x + 3} \cdot \frac{x}{x})]$

Step 3.2

Multiply $\frac{x}{x + 3}$ by $\frac{x}{x}$ .

$\frac{d}{d x} [10000 (\frac{x + 3}{x (x + 3)} + \frac{x \cdot x}{(x + 3) x})]$

Step 3.3

Reorder the factors of $(x + 3) x$ .

$\frac{d}{d x} [10000 (\frac{x + 3}{x (x + 3)} + \frac{x \cdot x}{x (x + 3)})]$

Step 4

Combine the numerators over the common denominator.

$\frac{d}{d x} [10000 \frac{x + 3 + x \cdot x}{x (x + 3)}]$

Step 5

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

$\frac{d}{d x} [10000 \frac{x + 3 + x^{1} x}{x (x + 3)}]$

Step 6

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

$\frac{d}{d x} [10000 \frac{x + 3 + x^{1} x^{1}}{x (x + 3)}]$

Step 7

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

$\frac{d}{d x} [10000 \frac{x + 3 + x^{1 + 1}}{x (x + 3)}]$

Step 8

Differentiate using the Constant Multiple Rule.

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Step 8.1

Add $1$ and $1$ .

$\frac{d}{d x} [10000 \frac{x + 3 + x^{2}}{x (x + 3)}]$

Step 8.2

Combine $10000$ and $\frac{x + 3 + x^{2}}{x (x + 3)}$ .

$\frac{d}{d x} [\frac{10000 (x + 3 + x^{2})}{x (x + 3)}]$

Step 8.3

Since $10000$ is constant with respect to $x$ , the derivative of $\frac{10000 (x + 3 + x^{2})}{x (x + 3)}$ with respect to $x$ is $10000 \frac{d}{d x} [\frac{x + 3 + x^{2}}{x (x + 3)}]$ .

$10000 \frac{d}{d x} [\frac{x + 3 + x^{2}}{x (x + 3)}]$

Step 9

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 $f (x) = x + 3 + x^{2}$ and $g (x) = x (x + 3)$ .

$10000 \frac{x (x + 3) \frac{d}{d x} [x + 3 + x^{2}] - (x + 3 + x^{2}) \frac{d}{d x} [x (x + 3)]}{{(x (x + 3))}^{2}}$

Step 10

Differentiate.

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Step 10.1

By the Sum Rule, the derivative of $x + 3 + x^{2}$ with respect to $x$ is $\frac{d}{d x} [x] + \frac{d}{d x} [3] + \frac{d}{d x} [x^{2}]$ .

$10000 \frac{x (x + 3) (\frac{d}{d x} [x] + \frac{d}{d x} [3] + \frac{d}{d x} [x^{2}]) - (x + 3 + x^{2}) \frac{d}{d x} [x (x + 3)]}{{(x (x + 3))}^{2}}$

Step 10.2

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

$10000 \frac{x (x + 3) (1 + \frac{d}{d x} [3] + \frac{d}{d x} [x^{2}]) - (x + 3 + x^{2}) \frac{d}{d x} [x (x + 3)]}{{(x (x + 3))}^{2}}$

Step 10.3

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

$10000 \frac{x (x + 3) (1 + 0 + \frac{d}{d x} [x^{2}]) - (x + 3 + x^{2}) \frac{d}{d x} [x (x + 3)]}{{(x (x + 3))}^{2}}$

Step 10.4

Add $1$ and $0$ .

$10000 \frac{x (x + 3) (1 + \frac{d}{d x} [x^{2}]) - (x + 3 + x^{2}) \frac{d}{d x} [x (x + 3)]}{{(x (x + 3))}^{2}}$

Step 10.5

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

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) \frac{d}{d x} [x (x + 3)]}{{(x (x + 3))}^{2}}$

Step 11

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 $f (x) = x$ and $g (x) = x + 3$ .

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x \frac{d}{d x} [x + 3] + (x + 3) \frac{d}{d x} [x])}{{(x (x + 3))}^{2}}$

Step 12

Differentiate.

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Step 12.1

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

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x (\frac{d}{d x} [x] + \frac{d}{d x} [3]) + (x + 3) \frac{d}{d x} [x])}{{(x (x + 3))}^{2}}$

Step 12.2

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

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x (1 + \frac{d}{d x} [3]) + (x + 3) \frac{d}{d x} [x])}{{(x (x + 3))}^{2}}$

Step 12.3

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

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x (1 + 0) + (x + 3) \frac{d}{d x} [x])}{{(x (x + 3))}^{2}}$

Step 12.4

Simplify the expression.

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Step 12.4.1

Add $1$ and $0$ .

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x \cdot 1 + (x + 3) \frac{d}{d x} [x])}{{(x (x + 3))}^{2}}$

Step 12.4.2

Multiply $x$ by $1$ .

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x + (x + 3) \frac{d}{d x} [x])}{{(x (x + 3))}^{2}}$

Step 12.5

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

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x + (x + 3) \cdot 1)}{{(x (x + 3))}^{2}}$

Step 12.6

Simplify terms.

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Step 12.6.1

Multiply $x + 3$ by $1$ .

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (x + x + 3)}{{(x (x + 3))}^{2}}$

Step 12.6.2

Add $x$ and $x$ .

$10000 \frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (2 x + 3)}{{(x (x + 3))}^{2}}$

Step 12.6.3

Combine $10000$ and $\frac{x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (2 x + 3)}{{(x (x + 3))}^{2}}$ .

$\frac{10000 (x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (2 x + 3))}{{(x (x + 3))}^{2}}$

Step 13

Simplify.

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Step 13.1

Apply the product rule to $x (x + 3)$ .

$\frac{10000 (x (x + 3) (1 + 2 x) - (x + 3 + x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.2

Apply the distributive property.

$\frac{10000 ((x \cdot x + x \cdot 3) (1 + 2 x) - (x + 3 + x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.3

Apply the distributive property.

$\frac{10000 ((x \cdot x + x \cdot 3) (1 + 2 x) + (- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.4

Apply the distributive property.

$\frac{10000 ((x \cdot x + x \cdot 3) (1 + 2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5

Simplify the numerator.

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Step 13.5.1

Simplify each term.

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Step 13.5.1.1

Simplify each term.

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Step 13.5.1.1.1

Multiply $x$ by $x$ .

$\frac{10000 ((x^{2} + x \cdot 3) (1 + 2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.1.2

Move $3$ to the left of $x$ .

$\frac{10000 ((x^{2} + 3 x) (1 + 2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.2

Expand $(x^{2} + 3 x) (1 + 2 x)$ using the FOIL Method.

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Step 13.5.1.2.1

Apply the distributive property.

$\frac{10000 (x^{2} (1 + 2 x) + 3 x (1 + 2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.2.2

Apply the distributive property.

$\frac{10000 (x^{2} \cdot 1 + x^{2} (2 x) + 3 x (1 + 2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.2.3

Apply the distributive property.

$\frac{10000 (x^{2} \cdot 1 + x^{2} (2 x) + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3

Simplify and combine like terms.

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Step 13.5.1.3.1

Simplify each term.

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Step 13.5.1.3.1.1

Multiply $x^{2}$ by $1$ .

$\frac{10000 (x^{2} + x^{2} (2 x) + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.2

Rewrite using the commutative property of multiplication.

$\frac{10000 (x^{2} + 2 x^{2} x + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.3

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

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Step 13.5.1.3.1.3.1

Move $x$ .

$\frac{10000 (x^{2} + 2 (x \cdot x^{2}) + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.3.2

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

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Step 13.5.1.3.1.3.2.1

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

$\frac{10000 (x^{2} + 2 (x^{1} x^{2}) + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.3.2.2

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

$\frac{10000 (x^{2} + 2 x^{1 + 2} + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.3.3

Add $1$ and $2$ .

$\frac{10000 (x^{2} + 2 x^{3} + 3 x \cdot 1 + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.4

Multiply $3$ by $1$ .

$\frac{10000 (x^{2} + 2 x^{3} + 3 x + 3 x (2 x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.5

Rewrite using the commutative property of multiplication.

$\frac{10000 (x^{2} + 2 x^{3} + 3 x + 3 \cdot 2 x \cdot x) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.6

Multiply $x$ by $x$ by adding the exponents.

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Step 13.5.1.3.1.6.1

Move $x$ .

$\frac{10000 (x^{2} + 2 x^{3} + 3 x + 3 \cdot 2 (x \cdot x)) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.6.2

Multiply $x$ by $x$ .

$\frac{10000 (x^{2} + 2 x^{3} + 3 x + 3 \cdot 2 x^{2}) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.1.7

Multiply $3$ by $2$ .

$\frac{10000 (x^{2} + 2 x^{3} + 3 x + 6 x^{2}) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.3.2

Add $x^{2}$ and $6 x^{2}$ .

$\frac{10000 (7 x^{2} + 2 x^{3} + 3 x) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.4

Apply the distributive property.

$\frac{10000 (7 x^{2}) + 10000 (2 x^{3}) + 10000 (3 x) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.5

Simplify.

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Step 13.5.1.5.1

Multiply $7$ by $10000$ .

$\frac{70000 x^{2} + 10000 (2 x^{3}) + 10000 (3 x) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.5.2

Multiply $2$ by $10000$ .

$\frac{70000 x^{2} + 20000 x^{3} + 10000 (3 x) + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.5.3

Multiply $3$ by $10000$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 ((- x - 1 \cdot 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.6

Multiply $- 1$ by $3$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 ((- x - 3 - x^{2}) (2 x + 3))}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.7

Expand $(- x - 3 - x^{2}) (2 x + 3)$ by multiplying each term in the first expression by each term in the second expression.

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- x (2 x) - x \cdot 3 - 3 (2 x) - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8

Simplify each term.

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Step 13.5.1.8.1

Rewrite using the commutative property of multiplication.

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 1 \cdot 2 x \cdot x - x \cdot 3 - 3 (2 x) - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.2

Multiply $x$ by $x$ by adding the exponents.

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Step 13.5.1.8.2.1

Move $x$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 1 \cdot 2 (x \cdot x) - x \cdot 3 - 3 (2 x) - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.2.2

Multiply $x$ by $x$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 1 \cdot 2 x^{2} - x \cdot 3 - 3 (2 x) - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.3

Multiply $- 1$ by $2$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - x \cdot 3 - 3 (2 x) - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.4

Multiply $3$ by $- 1$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 3 (2 x) - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.5

Multiply $2$ by $- 3$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 3 \cdot 3 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.6

Multiply $- 3$ by $3$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - x^{2} (2 x) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.7

Rewrite using the commutative property of multiplication.

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 1 \cdot 2 x^{2} x - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.8

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

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Step 13.5.1.8.8.1

Move $x$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 1 \cdot 2 (x \cdot x^{2}) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.8.2

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

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Step 13.5.1.8.8.2.1

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

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 1 \cdot 2 (x^{1} x^{2}) - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.8.2.2

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

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 1 \cdot 2 x^{1 + 2} - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.8.3

Add $1$ and $2$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 1 \cdot 2 x^{3} - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.9

Multiply $- 1$ by $2$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 2 x^{3} - x^{2} \cdot 3)}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.8.10

Multiply $3$ by $- 1$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 2 x^{2} - 3 x - 6 x - 9 - 2 x^{3} - 3 x^{2})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.9

Subtract $3 x^{2}$ from $- 2 x^{2}$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 5 x^{2} - 3 x - 6 x - 9 - 2 x^{3})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.10

Subtract $6 x$ from $- 3 x$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 5 x^{2} - 9 x - 9 - 2 x^{3})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.11

Apply the distributive property.

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x + 10000 (- 5 x^{2}) + 10000 (- 9 x) + 10000 \cdot - 9 + 10000 (- 2 x^{3})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.12

Simplify.

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Step 13.5.1.12.1

Multiply $- 5$ by $10000$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x - 50000 x^{2} + 10000 (- 9 x) + 10000 \cdot - 9 + 10000 (- 2 x^{3})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.12.2

Multiply $- 9$ by $10000$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x - 50000 x^{2} - 90000 x + 10000 \cdot - 9 + 10000 (- 2 x^{3})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.12.3

Multiply $10000$ by $- 9$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x - 50000 x^{2} - 90000 x - 90000 + 10000 (- 2 x^{3})}{x^{2} {(x + 3)}^{2}}$

Step 13.5.1.12.4

Multiply $- 2$ by $10000$ .

$\frac{70000 x^{2} + 20000 x^{3} + 30000 x - 50000 x^{2} - 90000 x - 90000 - 20000 x^{3}}{x^{2} {(x + 3)}^{2}}$

Step 13.5.2

Combine the opposite terms in $70000 x^{2} + 20000 x^{3} + 30000 x - 50000 x^{2} - 90000 x - 90000 - 20000 x^{3}$ .

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Step 13.5.2.1

Subtract $20000 x^{3}$ from $20000 x^{3}$ .

$\frac{70000 x^{2} + 30000 x - 50000 x^{2} - 90000 x - 90000 + 0}{x^{2} {(x + 3)}^{2}}$

Step 13.5.2.2

Add $70000 x^{2} + 30000 x - 50000 x^{2} - 90000 x - 90000$ and $0$ .

$\frac{70000 x^{2} + 30000 x - 50000 x^{2} - 90000 x - 90000}{x^{2} {(x + 3)}^{2}}$

Step 13.5.3

Subtract $50000 x^{2}$ from $70000 x^{2}$ .

$\frac{20000 x^{2} + 30000 x - 90000 x - 90000}{x^{2} {(x + 3)}^{2}}$

Step 13.5.4

Subtract $90000 x$ from $30000 x$ .

$\frac{20000 x^{2} - 60000 x - 90000}{x^{2} {(x + 3)}^{2}}$

Step 13.6

Factor $10000$ out of $20000 x^{2} - 60000 x - 90000$ .

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Step 13.6.1

Factor $10000$ out of $20000 x^{2}$ .

$\frac{10000 (2 x^{2}) - 60000 x - 90000}{x^{2} {(x + 3)}^{2}}$

Step 13.6.2

Factor $10000$ out of $- 60000 x$ .

$\frac{10000 (2 x^{2}) + 10000 (- 6 x) - 90000}{x^{2} {(x + 3)}^{2}}$

Step 13.6.3

Factor $10000$ out of $- 90000$ .

$\frac{10000 (2 x^{2}) + 10000 (- 6 x) + 10000 (- 9)}{x^{2} {(x + 3)}^{2}}$

Step 13.6.4

Factor $10000$ out of $10000 (2 x^{2}) + 10000 (- 6 x)$ .

$\frac{10000 (2 x^{2} - 6 x) + 10000 (- 9)}{x^{2} {(x + 3)}^{2}}$

Step 13.6.5

Factor $10000$ out of $10000 (2 x^{2} - 6 x) + 10000 (- 9)$ .

$\frac{10000 (2 x^{2} - 6 x - 9)}{x^{2} {(x + 3)}^{2}}$