Calculus Examples

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

Step 1

Rewrite ${(x - 6)}^{2}$ as $(x - 6) (x - 6)$ .

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

Step 2

Expand $(x - 6) (x - 6)$ using the FOIL Method.

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Step 2.1

Apply the distributive property.

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

Step 2.2

Apply the distributive property.

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

Step 2.3

Apply the distributive property.

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

Step 3

Simplify and combine like terms.

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Step 3.1

Simplify each term.

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Step 3.1.1

Multiply $x$ by $x$ .

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

Step 3.1.2

Move $- 6$ to the left of $x$ .

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

Step 3.1.3

Multiply $- 6$ by $- 6$ .

$\frac{d}{d x} [(x^{2} - 6 x - 6 x + 36) {(x + 2)}^{\frac{1}{3}}]$

Step 3.2

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

$\frac{d}{d x} [(x^{2} - 12 x + 36) {(x + 2)}^{\frac{1}{3}}]$

Step 4

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 $f (x) = x^{2} - 12 x + 36$ and $g (x) = {(x + 2)}^{\frac{1}{3}}$ .

$(x^{2} - 12 x + 36) \frac{d}{d x} [{(x + 2)}^{\frac{1}{3}}] + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 5

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

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Step 5.1

To apply the Chain Rule, set $u$ as $x + 2$ .

$(x^{2} - 12 x + 36) (\frac{d}{d u} [u^{\frac{1}{3}}] \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 5.2

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

$(x^{2} - 12 x + 36) (\frac{1}{3} u^{\frac{1}{3} - 1} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 5.3

Replace all occurrences of $u$ with $x + 2$ .

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{\frac{1}{3} - 1} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 6

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

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{\frac{1}{3} - 1 \cdot \frac{3}{3}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 7

Combine $- 1$ and $\frac{3}{3}$ .

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{\frac{1}{3} + \frac{- 1 \cdot 3}{3}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 8

Combine the numerators over the common denominator.

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{\frac{1 - 1 \cdot 3}{3}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 9

Simplify the numerator.

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Step 9.1

Multiply $- 1$ by $3$ .

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{\frac{1 - 3}{3}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 9.2

Subtract $3$ from $1$ .

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{\frac{- 2}{3}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 10

Combine fractions.

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Step 10.1

Move the negative in front of the fraction.

$(x^{2} - 12 x + 36) (\frac{1}{3} {(x + 2)}^{- \frac{2}{3}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 10.2

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

$(x^{2} - 12 x + 36) (\frac{{(x + 2)}^{- \frac{2}{3}}}{3} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 10.3

Move ${(x + 2)}^{- \frac{2}{3}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(x^{2} - 12 x + 36) (\frac{1}{3 {(x + 2)}^{\frac{2}{3}}} \frac{d}{d x} [x + 2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 11

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

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} (\frac{d}{d x} [x] + \frac{d}{d x} [2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 12

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

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} (1 + \frac{d}{d x} [2]) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 13

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

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} (1 + 0) + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 14

Simplify the expression.

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Step 14.1

Add $1$ and $0$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} \cdot 1 + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 14.2

Multiply $x^{2} - 12 x + 36$ by $1$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} \frac{d}{d x} [x^{2} - 12 x + 36]$

Step 15

By the Sum Rule, the derivative of $x^{2} - 12 x + 36$ with respect to $x$ is $\frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 12 x] + \frac{d}{d x} [36]$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (\frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 12 x] + \frac{d}{d x} [36])$

Step 16

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

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x + \frac{d}{d x} [- 12 x] + \frac{d}{d x} [36])$

Step 17

Since $- 12$ is constant with respect to $x$ , the derivative of $- 12 x$ with respect to $x$ is $- 12 \frac{d}{d x} [x]$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12 \frac{d}{d x} [x] + \frac{d}{d x} [36])$

Step 18

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

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12 \cdot 1 + \frac{d}{d x} [36])$

Step 19

Multiply $- 12$ by $1$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12 + \frac{d}{d x} [36])$

Step 20

Since $36$ is constant with respect to $x$ , the derivative of $36$ with respect to $x$ is $0$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12 + 0)$

Step 21

Add $2 x - 12$ and $0$ .

$(x^{2} - 12 x + 36) \frac{1}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12)$

Step 22

Simplify.

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Step 22.1

Simplify each term.

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Step 22.1.1

Multiply $x^{2} - 12 x + 36$ by $\frac{1}{3 {(x + 2)}^{\frac{2}{3}}}$ .

$\frac{x^{2} - 12 x + 36}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12)$

Step 22.1.2

Factor using the perfect square rule.

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Step 22.1.2.1

Rewrite $36$ as $6^{2}$ .

$\frac{x^{2} - 12 x + 6^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12)$

Step 22.1.2.2

Check that the middle term is two times the product of the numbers being squared in the first term and third term.

$12 x = 2 \cdot x \cdot 6$

Step 22.1.2.3

Rewrite the polynomial.

$\frac{x^{2} - 2 \cdot x \cdot 6 + 6^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12)$

Step 22.1.2.4

Factor using the perfect square trinomial rule $a^{2} - 2 a b + b^{2} = {(a - b)}^{2}$ , where $a = x$ and $b = 6$ .

$\frac{{(x - 6)}^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x - 12)$

Step 22.1.3

Apply the distributive property.

$\frac{{(x - 6)}^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + {(x + 2)}^{\frac{1}{3}} (2 x) + {(x + 2)}^{\frac{1}{3}} \cdot - 12$

Step 22.1.4

Rewrite using the commutative property of multiplication.

$\frac{{(x - 6)}^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + 2 {(x + 2)}^{\frac{1}{3}} x + {(x + 2)}^{\frac{1}{3}} \cdot - 12$

Step 22.1.5

Move $- 12$ to the left of ${(x + 2)}^{\frac{1}{3}}$ .

$\frac{{(x - 6)}^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + 2 {(x + 2)}^{\frac{1}{3}} x - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.2

To write $2 {(x + 2)}^{\frac{1}{3}} x$ as a fraction with a common denominator, multiply by $\frac{3 {(x + 2)}^{\frac{2}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$ .

$\frac{{(x - 6)}^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + 2 {(x + 2)}^{\frac{1}{3}} x \cdot \frac{3 {(x + 2)}^{\frac{2}{3}}}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.3

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

$\frac{{(x - 6)}^{2}}{3 {(x + 2)}^{\frac{2}{3}}} + \frac{2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.4

Combine the numerators over the common denominator.

$\frac{{(x - 6)}^{2} + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5

Simplify the numerator.

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Step 22.5.1

Rewrite ${(x - 6)}^{2}$ as $(x - 6) (x - 6)$ .

$\frac{(x - 6) (x - 6) + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.2

Expand $(x - 6) (x - 6)$ using the FOIL Method.

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Step 22.5.2.1

Apply the distributive property.

$\frac{x (x - 6) - 6 (x - 6) + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.2.2

Apply the distributive property.

$\frac{x \cdot x + x \cdot - 6 - 6 (x - 6) + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.2.3

Apply the distributive property.

$\frac{x \cdot x + x \cdot - 6 - 6 x - 6 \cdot - 6 + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.3

Simplify and combine like terms.

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Step 22.5.3.1

Simplify each term.

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Step 22.5.3.1.1

Multiply $x$ by $x$ .

$\frac{x^{2} + x \cdot - 6 - 6 x - 6 \cdot - 6 + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.3.1.2

Move $- 6$ to the left of $x$ .

$\frac{x^{2} - 6 \cdot x - 6 x - 6 \cdot - 6 + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.3.1.3

Multiply $- 6$ by $- 6$ .

$\frac{x^{2} - 6 x - 6 x + 36 + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.3.2

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

$\frac{x^{2} - 12 x + 36 + 2 {(x + 2)}^{\frac{1}{3}} x (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.4

Multiply ${(x + 2)}^{\frac{1}{3}}$ by ${(x + 2)}^{\frac{2}{3}}$ by adding the exponents.

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Step 22.5.4.1

Move ${(x + 2)}^{\frac{2}{3}}$ .

$\frac{x^{2} - 12 x + 36 + 2 ({(x + 2)}^{\frac{2}{3}} {(x + 2)}^{\frac{1}{3}}) x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.4.2

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

$\frac{x^{2} - 12 x + 36 + 2 {(x + 2)}^{\frac{2}{3} + \frac{1}{3}} x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.4.3

Combine the numerators over the common denominator.

$\frac{x^{2} - 12 x + 36 + 2 {(x + 2)}^{\frac{2 + 1}{3}} x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.4.4

Add $2$ and $1$ .

$\frac{x^{2} - 12 x + 36 + 2 {(x + 2)}^{\frac{3}{3}} x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.4.5

Divide $3$ by $3$ .

$\frac{x^{2} - 12 x + 36 + 2 {(x + 2)}^{1} x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.5

Simplify $2 {(x + 2)}^{1} x \cdot 3$ .

$\frac{x^{2} - 12 x + 36 + 2 (x + 2) x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.6

Apply the distributive property.

$\frac{x^{2} - 12 x + 36 + (2 x + 2 \cdot 2) x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.7

Multiply $2$ by $2$ .

$\frac{x^{2} - 12 x + 36 + (2 x + 4) x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.8

Apply the distributive property.

$\frac{x^{2} - 12 x + 36 + (2 x \cdot x + 4 x) \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.9

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

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Step 22.5.9.1

Move $x$ .

$\frac{x^{2} - 12 x + 36 + (2 (x \cdot x) + 4 x) \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.9.2

Multiply $x$ by $x$ .

$\frac{x^{2} - 12 x + 36 + (2 x^{2} + 4 x) \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.10

Apply the distributive property.

$\frac{x^{2} - 12 x + 36 + 2 x^{2} \cdot 3 + 4 x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.11

Multiply $3$ by $2$ .

$\frac{x^{2} - 12 x + 36 + 6 x^{2} + 4 x \cdot 3}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.12

Multiply $3$ by $4$ .

$\frac{x^{2} - 12 x + 36 + 6 x^{2} + 12 x}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.13

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

$\frac{7 x^{2} - 12 x + 36 + 12 x}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.14

Add $- 12 x$ and $12 x$ .

$\frac{7 x^{2} + 0 + 36}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.5.15

Add $7 x^{2}$ and $0$ .

$\frac{7 x^{2} + 36}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}}$

Step 22.6

To write $- 12 {(x + 2)}^{\frac{1}{3}}$ as a fraction with a common denominator, multiply by $\frac{3 {(x + 2)}^{\frac{2}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$ .

$\frac{7 x^{2} + 36}{3 {(x + 2)}^{\frac{2}{3}}} - 12 {(x + 2)}^{\frac{1}{3}} \cdot \frac{3 {(x + 2)}^{\frac{2}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.7

Combine $- 12 {(x + 2)}^{\frac{1}{3}}$ and $\frac{3 {(x + 2)}^{\frac{2}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$ .

$\frac{7 x^{2} + 36}{3 {(x + 2)}^{\frac{2}{3}}} + \frac{- 12 {(x + 2)}^{\frac{1}{3}} (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.8

Combine the numerators over the common denominator.

$\frac{7 x^{2} + 36 - 12 {(x + 2)}^{\frac{1}{3}} (3 {(x + 2)}^{\frac{2}{3}})}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9

Simplify the numerator.

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Step 22.9.1

Rewrite using the commutative property of multiplication.

$\frac{7 x^{2} + 36 - 12 \cdot 3 {(x + 2)}^{\frac{1}{3}} {(x + 2)}^{\frac{2}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.2

Multiply ${(x + 2)}^{\frac{1}{3}}$ by ${(x + 2)}^{\frac{2}{3}}$ by adding the exponents.

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Step 22.9.2.1

Move ${(x + 2)}^{\frac{2}{3}}$ .

$\frac{7 x^{2} + 36 - 12 \cdot 3 ({(x + 2)}^{\frac{2}{3}} {(x + 2)}^{\frac{1}{3}})}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.2.2

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

$\frac{7 x^{2} + 36 - 12 \cdot 3 {(x + 2)}^{\frac{2}{3} + \frac{1}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.2.3

Combine the numerators over the common denominator.

$\frac{7 x^{2} + 36 - 12 \cdot 3 {(x + 2)}^{\frac{2 + 1}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.2.4

Add $2$ and $1$ .

$\frac{7 x^{2} + 36 - 12 \cdot 3 {(x + 2)}^{\frac{3}{3}}}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.2.5

Divide $3$ by $3$ .

$\frac{7 x^{2} + 36 - 12 \cdot 3 {(x + 2)}^{1}}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.3

Simplify $- 12 \cdot 3 {(x + 2)}^{1}$ .

$\frac{7 x^{2} + 36 - 12 \cdot 3 (x + 2)}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.4

Multiply $- 12$ by $3$ .

$\frac{7 x^{2} + 36 - 36 (x + 2)}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.5

Apply the distributive property.

$\frac{7 x^{2} + 36 - 36 x - 36 \cdot 2}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.6

Multiply $- 36$ by $2$ .

$\frac{7 x^{2} + 36 - 36 x - 72}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.7

Subtract $72$ from $36$ .

$\frac{7 x^{2} - 36 x - 36}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.8

Factor by grouping.

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Step 22.9.8.1

For a polynomial of the form $a x^{2} + b x + c$ , rewrite the middle term as a sum of two terms whose product is $a \cdot c = 7 \cdot - 36 = - 252$ and whose sum is $b = - 36$ .

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Step 22.9.8.1.1

Factor $- 36$ out of $- 36 x$ .

$\frac{7 x^{2} - 36 (x) - 36}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.8.1.2

Rewrite $- 36$ as $6$ plus $- 42$

$\frac{7 x^{2} + (6 - 42) x - 36}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.8.1.3

Apply the distributive property.

$\frac{7 x^{2} + 6 x - 42 x - 36}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.8.2

Factor out the greatest common factor from each group.

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Step 22.9.8.2.1

Group the first two terms and the last two terms.

$\frac{(7 x^{2} + 6 x) - 42 x - 36}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.8.2.2

Factor out the greatest common factor (GCF) from each group.

$\frac{x (7 x + 6) - 6 (7 x + 6)}{3 {(x + 2)}^{\frac{2}{3}}}$

Step 22.9.8.3

Factor the polynomial by factoring out the greatest common factor, $7 x + 6$ .

$\frac{(7 x + 6) (x - 6)}{3 {(x + 2)}^{\frac{2}{3}}}$