Algebra Examples

$f (x) = 8 (\frac{x^{\frac{1}{3}}}{9} + 4)$

Step 1

Write $f (x) = 8 (\frac{x^{\frac{1}{3}}}{9} + 4)$ as an equation.

$y = 8 (\frac{x^{\frac{1}{3}}}{9} + 4)$

Step 2

Interchange the variables.

$x = 8 (\frac{y^{\frac{1}{3}}}{9} + 4)$

Step 3

Solve for $y$ .

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Step 3.1

Rewrite the equation as $8 (\frac{y^{\frac{1}{3}}}{9} + 4) = x$ .

$8 (\frac{y^{\frac{1}{3}}}{9} + 4) = x$

Step 3.2

Divide each term in $8 (\frac{y^{\frac{1}{3}}}{9} + 4) = x$ by $8$ and simplify.

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Step 3.2.1

Divide each term in $8 (\frac{y^{\frac{1}{3}}}{9} + 4) = x$ by $8$ .

$\frac{8 (\frac{y^{\frac{1}{3}}}{9} + 4)}{8} = \frac{x}{8}$

Step 3.2.2

Simplify the left side.

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Step 3.2.2.1

Cancel the common factor.

$\frac{8 (\frac{y^{\frac{1}{3}}}{9} + 4)}{8} = \frac{x}{8}$

Step 3.2.2.2

Divide $\frac{y^{\frac{1}{3}}}{9} + 4$ by $1$ .

$\frac{y^{\frac{1}{3}}}{9} + 4 = \frac{x}{8}$

Step 3.3

Move all terms not containing $y$ to the right side of the equation.

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Step 3.3.1

Subtract $4$ from both sides of the equation.

$\frac{y^{\frac{1}{3}}}{9} - \frac{x}{8} = - 4$

Step 3.3.2

Add $\frac{x}{8}$ to both sides of the equation.

$\frac{y^{\frac{1}{3}}}{9} = - 4 + \frac{x}{8}$

Step 3.4

Multiply both sides of the equation by $9$ .

$9 \frac{y^{\frac{1}{3}}}{9} = 9 (- 4 + \frac{x}{8})$

Step 3.5

Simplify both sides of the equation.

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Step 3.5.1

Simplify the left side.

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Step 3.5.1.1

Cancel the common factor of $9$ .

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Step 3.5.1.1.1

Cancel the common factor.

$9 \frac{y^{\frac{1}{3}}}{9} = 9 (- 4 + \frac{x}{8})$

Step 3.5.1.1.2

Rewrite the expression.

$y^{\frac{1}{3}} = 9 (- 4 + \frac{x}{8})$

Step 3.5.2

Simplify the right side.

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Step 3.5.2.1

Simplify $9 (- 4 + \frac{x}{8})$ .

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Step 3.5.2.1.1

Apply the distributive property.

$y^{\frac{1}{3}} = 9 \cdot - 4 + 9 \frac{x}{8}$

Step 3.5.2.1.2

Multiply $9$ by $- 4$ .

$y^{\frac{1}{3}} = - 36 + 9 \frac{x}{8}$

Step 3.5.2.1.3

Combine $9$ and $\frac{x}{8}$ .

$y^{\frac{1}{3}} = - 36 + \frac{9 x}{8}$

Step 3.6

Raise each side of the equation to the power of $3$ to eliminate the fractional exponent on the left side.

${(y^{\frac{1}{3}})}^{3} = {(- 36 + \frac{9 x}{8})}^{3}$

Step 3.7

Simplify the exponent.

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Step 3.7.1

Simplify the left side.

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Step 3.7.1.1

Simplify ${(y^{\frac{1}{3}})}^{3}$ .

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Step 3.7.1.1.1

Multiply the exponents in ${(y^{\frac{1}{3}})}^{3}$ .

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Step 3.7.1.1.1.1

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

$y^{\frac{1}{3} \cdot 3} = {(- 36 + \frac{9 x}{8})}^{3}$

Step 3.7.1.1.1.2

Cancel the common factor of $3$ .

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Step 3.7.1.1.1.2.1

Cancel the common factor.

$y^{\frac{1}{3} \cdot 3} = {(- 36 + \frac{9 x}{8})}^{3}$

Step 3.7.1.1.1.2.2

Rewrite the expression.

$y^{1} = {(- 36 + \frac{9 x}{8})}^{3}$

Step 3.7.1.1.2

Simplify.

$y = {(- 36 + \frac{9 x}{8})}^{3}$

Step 3.7.2

Simplify the right side.

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Step 3.7.2.1

Simplify ${(- 36 + \frac{9 x}{8})}^{3}$ .

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Step 3.7.2.1.1

Use the Binomial Theorem.

$y = {(- 36)}^{3} + 3 {(- 36)}^{2} \frac{9 x}{8} + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2

Simplify each term.

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Step 3.7.2.1.2.1

Raise $- 36$ to the power of $3$ .

$y = - 46656 + 3 {(- 36)}^{2} \frac{9 x}{8} + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.2

Raise $- 36$ to the power of $2$ .

$y = - 46656 + 3 \cdot 1296 \frac{9 x}{8} + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.3

Multiply $3$ by $1296$ .

$y = - 46656 + 3888 \frac{9 x}{8} + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.4

Cancel the common factor of $8$ .

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Step 3.7.2.1.2.4.1

Factor $8$ out of $3888$ .

$y = - 46656 + 8 (486) \frac{9 x}{8} + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.4.2

Cancel the common factor.

$y = - 46656 + 8 \cdot 486 \frac{9 x}{8} + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.4.3

Rewrite the expression.

$y = - 46656 + 486 (9 x) + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.5

Multiply $9$ by $486$ .

$y = - 46656 + 4374 x + 3 \cdot - 36 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.6

Multiply $3$ by $- 36$ .

$y = - 46656 + 4374 x - 108 {(\frac{9 x}{8})}^{2} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.7

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 3.7.2.1.2.7.1

Apply the product rule to $\frac{9 x}{8}$ .

$y = - 46656 + 4374 x - 108 \frac{{(9 x)}^{2}}{8^{2}} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.7.2

Apply the product rule to $9 x$ .

$y = - 46656 + 4374 x - 108 \frac{9^{2} x^{2}}{8^{2}} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.8

Raise $9$ to the power of $2$ .

$y = - 46656 + 4374 x - 108 \frac{81 x^{2}}{8^{2}} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.9

Raise $8$ to the power of $2$ .

$y = - 46656 + 4374 x - 108 \frac{81 x^{2}}{64} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.10

Cancel the common factor of $4$ .

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Step 3.7.2.1.2.10.1

Factor $4$ out of $- 108$ .

$y = - 46656 + 4374 x + 4 (- 27) \frac{81 x^{2}}{64} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.10.2

Factor $4$ out of $64$ .

$y = - 46656 + 4374 x + 4 \cdot - 27 \frac{81 x^{2}}{4 \cdot 16} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.10.3

Cancel the common factor.

$y = - 46656 + 4374 x + 4 \cdot - 27 \frac{81 x^{2}}{4 \cdot 16} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.10.4

Rewrite the expression.

$y = - 46656 + 4374 x - 27 \frac{81 x^{2}}{16} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.11

Combine $- 27$ and $\frac{81 x^{2}}{16}$ .

$y = - 46656 + 4374 x + \frac{- 27 (81 x^{2})}{16} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.12

Multiply $81$ by $- 27$ .

$y = - 46656 + 4374 x + \frac{- 2187 x^{2}}{16} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.13

Move the negative in front of the fraction.

$y = - 46656 + 4374 x - \frac{2187 x^{2}}{16} + {(\frac{9 x}{8})}^{3}$

Step 3.7.2.1.2.14

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 3.7.2.1.2.14.1

Apply the product rule to $\frac{9 x}{8}$ .

$y = - 46656 + 4374 x - \frac{2187 x^{2}}{16} + \frac{{(9 x)}^{3}}{8^{3}}$

Step 3.7.2.1.2.14.2

Apply the product rule to $9 x$ .

$y = - 46656 + 4374 x - \frac{2187 x^{2}}{16} + \frac{9^{3} x^{3}}{8^{3}}$

Step 3.7.2.1.2.15

Raise $9$ to the power of $3$ .

$y = - 46656 + 4374 x - \frac{2187 x^{2}}{16} + \frac{729 x^{3}}{8^{3}}$

Step 3.7.2.1.2.16

Raise $8$ to the power of $3$ .

$y = - 46656 + 4374 x - \frac{2187 x^{2}}{16} + \frac{729 x^{3}}{512}$

Step 3.8

Simplify $- 46656 + 4374 x - \frac{2187 x^{2}}{16} + \frac{729 x^{3}}{512}$ .

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Step 3.8.1

Move $- 46656$ .

$y = 4374 x - \frac{2187 x^{2}}{16} + \frac{729 x^{3}}{512} - 46656$

Step 3.8.2

Move $4374 x$ .

$y = - \frac{2187 x^{2}}{16} + \frac{729 x^{3}}{512} + 4374 x - 46656$

Step 3.8.3

Reorder $- \frac{2187 x^{2}}{16}$ and $\frac{729 x^{3}}{512}$ .

$y = \frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656$

Step 4

Replace $y$ with $f^{- 1} (x)$ to show the final answer.

$f^{- 1} (x) = \frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656$

Step 5

Verify if $f^{- 1} (x) = \frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656$ is the inverse of $f (x) = 8 (\frac{x^{\frac{1}{3}}}{9} + 4)$ .

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Step 5.1

To verify the inverse, check if $f^{- 1} (f (x)) = x$ and $f (f^{- 1} (x)) = x$ .

Step 5.2

Evaluate $f^{- 1} (f (x))$ .

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Step 5.2.1

Set up the composite result function.

$f^{- 1} (f (x))$

Step 5.2.2

Evaluate $f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4))$ by substituting in the value of $f$ into $f^{- 1}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{3}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3

Simplify each term.

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Step 5.2.3.1

Simplify the numerator.

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Step 5.2.3.1.1

Apply the product rule to $8 (\frac{x^{\frac{1}{3}}}{9} + 4)$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 \cdot (8^{3} {(\frac{x^{\frac{1}{3}}}{9} + 4)}^{3})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.2

Raise $8$ to the power of $3$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 \cdot (512 {(\frac{x^{\frac{1}{3}}}{9} + 4)}^{3})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.3

To write $4$ as a fraction with a common denominator, multiply by $\frac{9}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 \cdot (512 {(\frac{x^{\frac{1}{3}}}{9} + 4 \cdot \frac{9}{9})}^{3})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.4

Combine $4$ and $\frac{9}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 \cdot (512 {(\frac{x^{\frac{1}{3}}}{9} + \frac{4 \cdot 9}{9})}^{3})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.5

Combine the numerators over the common denominator.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 \cdot (512 {(\frac{x^{\frac{1}{3}} + 4 \cdot 9}{9})}^{3})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.6

Multiply $4$ by $9$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{729 \cdot (512 {(\frac{x^{\frac{1}{3}} + 36}{9})}^{3})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.7

Multiply $729$ by $512$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{373248 {(\frac{x^{\frac{1}{3}} + 36}{9})}^{3}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.8

Apply the product rule to $\frac{x^{\frac{1}{3}} + 36}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{373248 (\frac{{(x^{\frac{1}{3}} + 36)}^{3}}{9^{3}})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.1.9

Raise $9$ to the power of $3$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{373248 (\frac{{(x^{\frac{1}{3}} + 36)}^{3}}{729})}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.2

Combine $373248$ and $\frac{{(x^{\frac{1}{3}} + 36)}^{3}}{729}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{\frac{373248 {(x^{\frac{1}{3}} + 36)}^{3}}{729}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.3

Reduce the expression by cancelling the common factors.

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Step 5.2.3.3.1

Reduce the expression $\frac{373248 {(x^{\frac{1}{3}} + 36)}^{3}}{729}$ by cancelling the common factors.

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Step 5.2.3.3.1.1

Factor $729$ out of $373248 {(x^{\frac{1}{3}} + 36)}^{3}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{\frac{729 (512 {(x^{\frac{1}{3}} + 36)}^{3})}{729}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.3.1.2

Factor $729$ out of $729$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{\frac{729 (512 {(x^{\frac{1}{3}} + 36)}^{3})}{729 (1)}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.3.1.3

Cancel the common factor.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{\frac{729 (512 {(x^{\frac{1}{3}} + 36)}^{3})}{729 \cdot 1}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.3.1.4

Rewrite the expression.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{\frac{512 {(x^{\frac{1}{3}} + 36)}^{3}}{1}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.3.2

Divide $512 {(x^{\frac{1}{3}} + 36)}^{3}$ by $1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = \frac{512 {(x^{\frac{1}{3}} + 36)}^{3}}{512} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.4

Cancel the common factor.

Step 5.2.3.5

Divide ${(x^{\frac{1}{3}} + 36)}^{3}$ by $1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = {(x^{\frac{1}{3}} + 36)}^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.6

Use the Binomial Theorem.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = {(x^{\frac{1}{3}})}^{3} + 3 {(x^{\frac{1}{3}})}^{2} \cdot 36 + 3 x^{\frac{1}{3}} \cdot 36^{2} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7

Simplify each term.

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Step 5.2.3.7.1

Multiply the exponents in ${(x^{\frac{1}{3}})}^{3}$ .

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Step 5.2.3.7.1.1

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

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x^{\frac{1}{3} \cdot 3} + 3 {(x^{\frac{1}{3}})}^{2} \cdot 36 + 3 x^{\frac{1}{3}} \cdot 36^{2} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.1.2

Cancel the common factor of $3$ .

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Step 5.2.3.7.1.2.1

Cancel the common factor.

Step 5.2.3.7.1.2.2

Rewrite the expression.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3 {(x^{\frac{1}{3}})}^{2} \cdot 36 + 3 x^{\frac{1}{3}} \cdot 36^{2} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.2

Simplify.

Step 5.2.3.7.3

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

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Step 5.2.3.7.3.1

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

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3 x^{\frac{1}{3} \cdot 2} \cdot 36 + 3 x^{\frac{1}{3}} \cdot 36^{2} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.3.2

Combine $\frac{1}{3}$ and $2$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3 x^{\frac{2}{3}} \cdot 36 + 3 x^{\frac{1}{3}} \cdot 36^{2} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.4

Multiply $36$ by $3$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3 x^{\frac{1}{3}} \cdot 36^{2} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.5

Raise $36$ to the power of $2$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3 x^{\frac{1}{3}} \cdot 1296 + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.6

Multiply $1296$ by $3$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 36^{3} - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.7.7

Raise $36$ to the power of $3$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 {(8 (\frac{x^{\frac{1}{3}}}{9} + 4))}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8

Simplify the numerator.

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Step 5.2.3.8.1

Apply the product rule to $8 (\frac{x^{\frac{1}{3}}}{9} + 4)$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 \cdot (8^{2} {(\frac{x^{\frac{1}{3}}}{9} + 4)}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.2

Raise $8$ to the power of $2$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 \cdot (64 {(\frac{x^{\frac{1}{3}}}{9} + 4)}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.3

To write $4$ as a fraction with a common denominator, multiply by $\frac{9}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 \cdot (64 {(\frac{x^{\frac{1}{3}}}{9} + 4 \cdot \frac{9}{9})}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.4

Combine $4$ and $\frac{9}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 \cdot (64 {(\frac{x^{\frac{1}{3}}}{9} + \frac{4 \cdot 9}{9})}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.5

Combine the numerators over the common denominator.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 \cdot (64 {(\frac{x^{\frac{1}{3}} + 4 \cdot 9}{9})}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.6

Multiply $4$ by $9$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{2187 \cdot (64 {(\frac{x^{\frac{1}{3}} + 36}{9})}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.7

Multiply $2187$ by $64$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{139968 {(\frac{x^{\frac{1}{3}} + 36}{9})}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.8

Apply the product rule to $\frac{x^{\frac{1}{3}} + 36}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{139968 (\frac{{(x^{\frac{1}{3}} + 36)}^{2}}{9^{2}})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.8.9

Raise $9$ to the power of $2$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{139968 (\frac{{(x^{\frac{1}{3}} + 36)}^{2}}{81})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.9

Combine $139968$ and $\frac{{(x^{\frac{1}{3}} + 36)}^{2}}{81}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{\frac{139968 {(x^{\frac{1}{3}} + 36)}^{2}}{81}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.10

Reduce the expression by cancelling the common factors.

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Step 5.2.3.10.1

Reduce the expression $\frac{139968 {(x^{\frac{1}{3}} + 36)}^{2}}{81}$ by cancelling the common factors.

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Step 5.2.3.10.1.1

Factor $81$ out of $139968 {(x^{\frac{1}{3}} + 36)}^{2}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{\frac{81 (1728 {(x^{\frac{1}{3}} + 36)}^{2})}{81}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.10.1.2

Factor $81$ out of $81$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{\frac{81 (1728 {(x^{\frac{1}{3}} + 36)}^{2})}{81 (1)}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.10.1.3

Cancel the common factor.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{\frac{81 (1728 {(x^{\frac{1}{3}} + 36)}^{2})}{81 \cdot 1}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.10.1.4

Rewrite the expression.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{\frac{1728 {(x^{\frac{1}{3}} + 36)}^{2}}{1}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.10.2

Divide $1728 {(x^{\frac{1}{3}} + 36)}^{2}$ by $1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{1728 {(x^{\frac{1}{3}} + 36)}^{2}}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.11

Factor $16$ out of $1728 {(x^{\frac{1}{3}} + 36)}^{2}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{16 (108 {(x^{\frac{1}{3}} + 36)}^{2})}{16} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.12

Cancel the common factors.

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Step 5.2.3.12.1

Factor $16$ out of $16$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{16 (108 {(x^{\frac{1}{3}} + 36)}^{2})}{16 (1)} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.12.2

Cancel the common factor.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{16 (108 {(x^{\frac{1}{3}} + 36)}^{2})}{16 \cdot 1} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.12.3

Rewrite the expression.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - \frac{108 {(x^{\frac{1}{3}} + 36)}^{2}}{1} + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.12.4

Divide $108 {(x^{\frac{1}{3}} + 36)}^{2}$ by $1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 {(x^{\frac{1}{3}} + 36)}^{2}) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.13

Rewrite ${(x^{\frac{1}{3}} + 36)}^{2}$ as $(x^{\frac{1}{3}} + 36) (x^{\frac{1}{3}} + 36)$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 ((x^{\frac{1}{3}} + 36) (x^{\frac{1}{3}} + 36))) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.14

Expand $(x^{\frac{1}{3}} + 36) (x^{\frac{1}{3}} + 36)$ using the FOIL Method.

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Step 5.2.3.14.1

Apply the distributive property.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{1}{3}} (x^{\frac{1}{3}} + 36) + 36 (x^{\frac{1}{3}} + 36))) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.14.2

Apply the distributive property.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{1}{3}} x^{\frac{1}{3}} + x^{\frac{1}{3}} \cdot 36 + 36 (x^{\frac{1}{3}} + 36))) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.14.3

Apply the distributive property.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{1}{3}} x^{\frac{1}{3}} + x^{\frac{1}{3}} \cdot 36 + 36 x^{\frac{1}{3}} + 36 \cdot 36)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.15

Simplify and combine like terms.

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Step 5.2.3.15.1

Simplify each term.

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Step 5.2.3.15.1.1

Multiply $x^{\frac{1}{3}}$ by $x^{\frac{1}{3}}$ by adding the exponents.

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Step 5.2.3.15.1.1.1

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

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{1}{3} + \frac{1}{3}} + x^{\frac{1}{3}} \cdot 36 + 36 x^{\frac{1}{3}} + 36 \cdot 36)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.15.1.1.2

Combine the numerators over the common denominator.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{1 + 1}{3}} + x^{\frac{1}{3}} \cdot 36 + 36 x^{\frac{1}{3}} + 36 \cdot 36)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.15.1.1.3

Add $1$ and $1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{2}{3}} + x^{\frac{1}{3}} \cdot 36 + 36 x^{\frac{1}{3}} + 36 \cdot 36)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.15.1.2

Move $36$ to the left of $x^{\frac{1}{3}}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{2}{3}} + 36 \cdot x^{\frac{1}{3}} + 36 x^{\frac{1}{3}} + 36 \cdot 36)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.15.1.3

Multiply $36$ by $36$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{2}{3}} + 36 x^{\frac{1}{3}} + 36 x^{\frac{1}{3}} + 1296)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.15.2

Add $36 x^{\frac{1}{3}}$ and $36 x^{\frac{1}{3}}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 (x^{\frac{2}{3}} + 72 x^{\frac{1}{3}} + 1296)) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.16

Apply the distributive property.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 x^{\frac{2}{3}} + 108 (72 x^{\frac{1}{3}}) + 108 \cdot 1296) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.17

Simplify.

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Step 5.2.3.17.1

Multiply $72$ by $108$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 x^{\frac{2}{3}} + 7776 x^{\frac{1}{3}} + 108 \cdot 1296) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.17.2

Multiply $108$ by $1296$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 x^{\frac{2}{3}} + 7776 x^{\frac{1}{3}} + 139968) + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.18

Apply the distributive property.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - (108 x^{\frac{2}{3}}) - (7776 x^{\frac{1}{3}}) - 1 \cdot 139968 + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.19

Simplify.

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Step 5.2.3.19.1

Multiply $108$ by $- 1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - (7776 x^{\frac{1}{3}}) - 1 \cdot 139968 + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.19.2

Multiply $7776$ by $- 1$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 1 \cdot 139968 + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.19.3

Multiply $- 1$ by $139968$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 4374 (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) - 46656$

Step 5.2.3.20

Apply the distributive property.

Step 5.2.3.21

Combine $8$ and $\frac{x^{\frac{1}{3}}}{9}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 4374 (\frac{8 x^{\frac{1}{3}}}{9} + 8 \cdot 4) - 46656$

Step 5.2.3.22

Multiply $8$ by $4$ .

Step 5.2.3.23

Apply the distributive property.

Step 5.2.3.24

Cancel the common factor of $9$ .

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Step 5.2.3.24.1

Factor $9$ out of $4374$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 9 (486) (\frac{8 x^{\frac{1}{3}}}{9}) + 4374 \cdot 32 - 46656$

Step 5.2.3.24.2

Cancel the common factor.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 9 \cdot (486 (\frac{8 x^{\frac{1}{3}}}{9})) + 4374 \cdot 32 - 46656$

Step 5.2.3.24.3

Rewrite the expression.

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 486 (8 x^{\frac{1}{3}}) + 4374 \cdot 32 - 46656$

Step 5.2.3.25

Multiply $8$ by $486$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 3888 x^{\frac{1}{3}} + 4374 \cdot 32 - 46656$

Step 5.2.3.26

Multiply $4374$ by $32$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 3888 x^{\frac{1}{3}} + 139968 - 46656$

Step 5.2.4

Simplify by adding terms.

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Step 5.2.4.1

Combine the opposite terms in $x + 108 x^{\frac{2}{3}} + 3888 x^{\frac{1}{3}} + 46656 - 108 x^{\frac{2}{3}} - 7776 x^{\frac{1}{3}} - 139968 + 3888 x^{\frac{1}{3}} + 139968 - 46656$ .

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Step 5.2.4.1.1

Subtract $108 x^{\frac{2}{3}}$ from $108 x^{\frac{2}{3}}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3888 x^{\frac{1}{3}} + 46656 + 0 - 7776 x^{\frac{1}{3}} - 139968 + 3888 x^{\frac{1}{3}} + 139968 - 46656$

Step 5.2.4.1.2

Add $x + 3888 x^{\frac{1}{3}} + 46656$ and $0$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3888 x^{\frac{1}{3}} + 46656 - 7776 x^{\frac{1}{3}} - 139968 + 3888 x^{\frac{1}{3}} + 139968 - 46656$

Step 5.2.4.1.3

Add $- 139968$ and $139968$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3888 x^{\frac{1}{3}} + 46656 - 7776 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}} + 0 - 46656$

Step 5.2.4.1.4

Add $x + 3888 x^{\frac{1}{3}} + 46656 - 7776 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}}$ and $0$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3888 x^{\frac{1}{3}} + 46656 - 7776 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}} - 46656$

Step 5.2.4.1.5

Subtract $46656$ from $46656$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3888 x^{\frac{1}{3}} - 7776 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}} + 0$

Step 5.2.4.1.6

Add $x + 3888 x^{\frac{1}{3}} - 7776 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}}$ and $0$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 3888 x^{\frac{1}{3}} - 7776 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}}$

Step 5.2.4.2

Subtract $7776 x^{\frac{1}{3}}$ from $3888 x^{\frac{1}{3}}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x - 3888 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}}$

Step 5.2.4.3

Combine the opposite terms in $x - 3888 x^{\frac{1}{3}} + 3888 x^{\frac{1}{3}}$ .

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Step 5.2.4.3.1

Add $- 3888 x^{\frac{1}{3}}$ and $3888 x^{\frac{1}{3}}$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x + 0$

Step 5.2.4.3.2

Add $x$ and $0$ .

$f^{- 1} (8 (\frac{x^{\frac{1}{3}}}{9} + 4)) = x$

Step 5.3

Evaluate $f (f^{- 1} (x))$ .

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Step 5.3.1

Set up the composite result function.

$f (f^{- 1} (x))$

Step 5.3.2

Evaluate $f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656)$ by substituting in the value of $f^{- 1}$ into $f$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3

Simplify each term.

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Step 5.3.3.1

Simplify the numerator.

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Step 5.3.3.1.1

To write $- \frac{2187 x^{2}}{16}$ as a fraction with a common denominator, multiply by $\frac{32}{32}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} \cdot \frac{32}{32} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.2

Write each expression with a common denominator of $512$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.1.2.1

Multiply $\frac{2187 x^{2}}{16}$ by $\frac{32}{32}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{3}}{512} - \frac{2187 x^{2} \cdot 32}{16 \cdot 32} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.2.2

Multiply $16$ by $32$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{3}}{512} - \frac{2187 x^{2} \cdot 32}{512} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.3

Combine the numerators over the common denominator.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{3} - 2187 x^{2} \cdot 32}{512} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.4

Simplify the numerator.

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Step 5.3.3.1.4.1

Factor $729 x^{2}$ out of $729 x^{3} - 2187 x^{2} \cdot 32$ .

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Step 5.3.3.1.4.1.1

Factor $729 x^{2}$ out of $729 x^{3}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x) - 2187 x^{2} \cdot 32}{512} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.4.1.2

Factor $729 x^{2}$ out of $- 2187 x^{2} \cdot 32$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x) + 729 x^{2} (- 3 \cdot 32)}{512} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.4.1.3

Factor $729 x^{2}$ out of $729 x^{2} (x) + 729 x^{2} (- 3 \cdot 32)$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x - 3 \cdot 32)}{512} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.4.2

Multiply $- 3$ by $32$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x - 96)}{512} + 4374 x - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.5

To write $4374 x$ as a fraction with a common denominator, multiply by $\frac{512}{512}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x - 96)}{512} + 4374 x \cdot \frac{512}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.6

Combine $4374 x$ and $\frac{512}{512}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x - 96)}{512} + \frac{4374 x \cdot 512}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.7

Combine the numerators over the common denominator.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x^{2} (x - 96) + 4374 x \cdot 512}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8

Simplify the numerator.

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Step 5.3.3.1.8.1

Factor $729 x$ out of $729 x^{2} (x - 96) + 4374 x \cdot 512$ .

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Step 5.3.3.1.8.1.1

Factor $729 x$ out of $729 x^{2} (x - 96)$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x (x - 96)) + 4374 x \cdot 512}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8.1.2

Factor $729 x$ out of $4374 x \cdot 512$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x (x - 96)) + 729 x (6 \cdot 512)}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8.1.3

Factor $729 x$ out of $729 x (x (x - 96)) + 729 x (6 \cdot 512)$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x (x - 96) + 6 \cdot 512)}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8.2

Multiply $6$ by $512$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x (x - 96) + 3072)}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8.3

Simplify each term.

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Step 5.3.3.1.8.3.1

Apply the distributive property.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x \cdot x + x \cdot - 96 + 3072)}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8.3.2

Multiply $x$ by $x$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x^{2} + x \cdot - 96 + 3072)}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.8.3.3

Move $- 96$ to the left of $x$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x^{2} - 96 x + 3072)}{512} - 46656)}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.9

To write $- 46656$ as a fraction with a common denominator, multiply by $\frac{512}{512}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x^{2} - 96 x + 3072)}{512} - 46656 \cdot \frac{512}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.10

Combine $- 46656$ and $\frac{512}{512}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x^{2} - 96 x + 3072)}{512} + \frac{- 46656 \cdot 512}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.11

Combine the numerators over the common denominator.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 x (x^{2} - 96 x + 3072) - 46656 \cdot 512}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12

Simplify the numerator.

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Step 5.3.3.1.12.1

Factor $729$ out of $729 x (x^{2} - 96 x + 3072) - 46656 \cdot 512$ .

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Step 5.3.3.1.12.1.1

Factor $729$ out of $729 x (x^{2} - 96 x + 3072)$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x (x^{2} - 96 x + 3072)) - 46656 \cdot 512}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.1.2

Factor $729$ out of $- 46656 \cdot 512$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x (x^{2} - 96 x + 3072)) + 729 (- 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.1.3

Factor $729$ out of $729 (x (x^{2} - 96 x + 3072)) + 729 (- 64 \cdot 512)$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x (x^{2} - 96 x + 3072) - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.2

Apply the distributive property.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x \cdot x^{2} + x (- 96 x) + x \cdot 3072 - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.3

Simplify.

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Step 5.3.3.1.12.3.1

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

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Step 5.3.3.1.12.3.1.1

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

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Step 5.3.3.1.12.3.1.1.1

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

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x \cdot x^{2} + x (- 96 x) + x \cdot 3072 - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.3.1.1.2

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

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{1 + 2} + x (- 96 x) + x \cdot 3072 - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.3.1.2

Add $1$ and $2$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} + x (- 96 x) + x \cdot 3072 - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.3.2

Rewrite using the commutative property of multiplication.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} - 96 x \cdot x + x \cdot 3072 - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.3.3

Move $3072$ to the left of $x$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} - 96 x \cdot x + 3072 \cdot x - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.4

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

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Step 5.3.3.1.12.4.1

Move $x$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} - 96 (x \cdot x) + 3072 \cdot x - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.4.2

Multiply $x$ by $x$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} - 96 x^{2} + 3072 \cdot x - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} - 96 x^{2} + 3072 x - 64 \cdot 512)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.5

Multiply $- 64$ by $512$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 (x^{3} - 96 x^{2} + 3072 x - 32768)}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6

Rewrite $x^{3} - 96 x^{2} + 3072 x - 32768$ in a factored form.

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Step 5.3.3.1.12.6.1

Factor $x^{3} - 96 x^{2} + 3072 x - 32768$ using the rational roots test.

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Step 5.3.3.1.12.6.1.1

If a polynomial function has integer coefficients, then every rational zero will have the form $\frac{p}{q}$ where $p$ is a factor of the constant and $q$ is a factor of the leading coefficient.

$p = \pm 1, \pm 32768, \pm 2, \pm 16384, \pm 4, \pm 8192, \pm 8, \pm 4096, \pm 16, \pm 2048, \pm 32, \pm 1024, \pm 64, \pm 512, \pm 128, \pm 256$

$q = \pm 1$

Step 5.3.3.1.12.6.1.2

Find every combination of $\pm \frac{p}{q}$ . These are the possible roots of the polynomial function.

$\pm 1, \pm 32768, \pm 2, \pm 16384, \pm 4, \pm 8192, \pm 8, \pm 4096, \pm 16, \pm 2048, \pm 32, \pm 1024, \pm 64, \pm 512, \pm 128, \pm 256$

Step 5.3.3.1.12.6.1.3

Substitute $32$ and simplify the expression. In this case, the expression is equal to $0$ so $32$ is a root of the polynomial.

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Step 5.3.3.1.12.6.1.3.1

Substitute $32$ into the polynomial.

$32^{3} - 96 \cdot 32^{2} + 3072 \cdot 32 - 32768$

Step 5.3.3.1.12.6.1.3.2

Raise $32$ to the power of $3$ .

$32768 - 96 \cdot 32^{2} + 3072 \cdot 32 - 32768$

Step 5.3.3.1.12.6.1.3.3

Raise $32$ to the power of $2$ .

$32768 - 96 \cdot 1024 + 3072 \cdot 32 - 32768$

Step 5.3.3.1.12.6.1.3.4

Multiply $- 96$ by $1024$ .

$32768 - 98304 + 3072 \cdot 32 - 32768$

Step 5.3.3.1.12.6.1.3.5

Subtract $98304$ from $32768$ .

$- 65536 + 3072 \cdot 32 - 32768$

Step 5.3.3.1.12.6.1.3.6

Multiply $3072$ by $32$ .

$- 65536 + 98304 - 32768$

Step 5.3.3.1.12.6.1.3.7

Add $- 65536$ and $98304$ .

$32768 - 32768$

Step 5.3.3.1.12.6.1.3.8

Subtract $32768$ from $32768$ .

$0$

Step 5.3.3.1.12.6.1.4

Since $32$ is a known root, divide the polynomial by $x - 32$ to find the quotient polynomial. This polynomial can then be used to find the remaining roots.

$\frac{x^{3} - 96 x^{2} + 3072 x - 32768}{x - 32}$

Step 5.3.3.1.12.6.1.5

Divide $x^{3} - 96 x^{2} + 3072 x - 32768$ by $x - 32$ .

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Step 5.3.3.1.12.6.1.5.1

Set up the polynomials to be divided. If there is not a term for every exponent, insert one with a value of $0$ .

$x$

$32$

$x^{3}$

$96 x^{2}$

$3072 x$

$32768$

Step 5.3.3.1.12.6.1.5.2

Divide the highest order term in the dividend $x^{3}$ by the highest order term in divisor $x$ .

					$x^{2}$
	$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$

Step 5.3.3.1.12.6.1.5.3

Multiply the new quotient term by the divisor.

				$x^{2}$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			+	$x^{3}$	-	$32 x^{2}$

Step 5.3.3.1.12.6.1.5.4

The expression needs to be subtracted from the dividend, so change all the signs in $x^{3} - 32 x^{2}$

				$x^{2}$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$

Step 5.3.3.1.12.6.1.5.5

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

				$x^{2}$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$

Step 5.3.3.1.12.6.1.5.6

Pull the next terms from the original dividend down into the current dividend.

				$x^{2}$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$

Step 5.3.3.1.12.6.1.5.7

Divide the highest order term in the dividend $- 64 x^{2}$ by the highest order term in divisor $x$ .

				$x^{2}$	-	$64 x$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$

Step 5.3.3.1.12.6.1.5.8

Multiply the new quotient term by the divisor.

				$x^{2}$	-	$64 x$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					-	$64 x^{2}$	+	$2048 x$

Step 5.3.3.1.12.6.1.5.9

The expression needs to be subtracted from the dividend, so change all the signs in $- 64 x^{2} + 2048 x$

				$x^{2}$	-	$64 x$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$

Step 5.3.3.1.12.6.1.5.10

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

				$x^{2}$	-	$64 x$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$
							+	$1024 x$

Step 5.3.3.1.12.6.1.5.11

Pull the next terms from the original dividend down into the current dividend.

				$x^{2}$	-	$64 x$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$
							+	$1024 x$	-	$32768$

Step 5.3.3.1.12.6.1.5.12

Divide the highest order term in the dividend $1024 x$ by the highest order term in divisor $x$ .

				$x^{2}$	-	$64 x$	+	$1024$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$
							+	$1024 x$	-	$32768$

Step 5.3.3.1.12.6.1.5.13

Multiply the new quotient term by the divisor.

				$x^{2}$	-	$64 x$	+	$1024$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$
							+	$1024 x$	-	$32768$
							+	$1024 x$	-	$32768$

Step 5.3.3.1.12.6.1.5.14

The expression needs to be subtracted from the dividend, so change all the signs in $1024 x - 32768$

				$x^{2}$	-	$64 x$	+	$1024$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$
							+	$1024 x$	-	$32768$
							-	$1024 x$	+	$32768$

Step 5.3.3.1.12.6.1.5.15

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

				$x^{2}$	-	$64 x$	+	$1024$
$x$	-	$32$		$x^{3}$	-	$96 x^{2}$	+	$3072 x$	-	$32768$
			-	$x^{3}$	+	$32 x^{2}$
					-	$64 x^{2}$	+	$3072 x$
					+	$64 x^{2}$	-	$2048 x$
							+	$1024 x$	-	$32768$
							-	$1024 x$	+	$32768$
										$0$

Step 5.3.3.1.12.6.1.5.16

Since the remander is $0$ , the final answer is the quotient.

$x^{2} - 64 x + 1024$

Step 5.3.3.1.12.6.1.6

Write $x^{3} - 96 x^{2} + 3072 x - 32768$ as a set of factors.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 ((x - 32) (x^{2} - 64 x + 1024))}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6.2

Factor using the perfect square rule.

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Step 5.3.3.1.12.6.2.1

Rewrite $1024$ as $32^{2}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 ((x - 32) (x^{2} - 64 x + 32^{2}))}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6.2.2

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

$64 x = 2 \cdot x \cdot 32$

Step 5.3.3.1.12.6.2.3

Rewrite the polynomial.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 ((x - 32) (x^{2} - 2 \cdot x \cdot 32 + 32^{2}))}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6.2.4

Factor using the perfect square trinomial rule $a^{2} - 2 a b + b^{2} = {(a - b)}^{2}$ , where $a = x$ and $b = 32$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 ((x - 32) {(x - 32)}^{2})}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6.3

Combine like factors.

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Step 5.3.3.1.12.6.3.1

Raise $x - 32$ to the power of $1$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 ((x - 32) {(x - 32)}^{2})}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6.3.2

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

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 {(x - 32)}^{1 + 2}}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.12.6.3.3

Add $1$ and $2$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{{(\frac{729 {(x - 32)}^{3}}{512})}^{\frac{1}{3}}}{9} + 4)$

Step 5.3.3.1.13

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 5.3.3.1.13.1

Apply the product rule to $\frac{729 {(x - 32)}^{3}}{512}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{{(729 {(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.13.2

Apply the product rule to $729 {(x - 32)}^{3}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{729^{\frac{1}{3}} {({(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14

Simplify the numerator.

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Step 5.3.3.1.14.1

Rewrite $729$ as $9^{3}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{{(9^{3})}^{\frac{1}{3}} {({(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.2

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

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9^{3 (\frac{1}{3})} {({(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.3

Cancel the common factor of $3$ .

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Step 5.3.3.1.14.3.1

Cancel the common factor.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9^{3 (\frac{1}{3})} {({(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.3.2

Rewrite the expression.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 {({(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.4

Evaluate the exponent.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 {({(x - 32)}^{3})}^{\frac{1}{3}}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.5

Multiply the exponents in ${({(x - 32)}^{3})}^{\frac{1}{3}}$ .

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Step 5.3.3.1.14.5.1

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

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 {(x - 32)}^{3 (\frac{1}{3})}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.5.2

Cancel the common factor of $3$ .

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Step 5.3.3.1.14.5.2.1

Cancel the common factor.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 {(x - 32)}^{3 (\frac{1}{3})}}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.5.2.2

Rewrite the expression.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.14.6

Simplify.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{512^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.15

Simplify the denominator.

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Step 5.3.3.1.15.1

Rewrite $512$ as $8^{3}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{{(8^{3})}^{\frac{1}{3}}}}{9} + 4)$

Step 5.3.3.1.15.2

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

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{8^{3 (\frac{1}{3})}}}{9} + 4)$

Step 5.3.3.1.15.3

Cancel the common factor of $3$ .

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Step 5.3.3.1.15.3.1

Cancel the common factor.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{8^{3 (\frac{1}{3})}}}{9} + 4)$

Step 5.3.3.1.15.3.2

Rewrite the expression.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{8}}{9} + 4)$

Step 5.3.3.1.15.4

Evaluate the exponent.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{\frac{9 (x - 32)}{8}}{9} + 4)$

Step 5.3.3.2

Multiply the numerator by the reciprocal of the denominator.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{9 (x - 32)}{8} \cdot \frac{1}{9} + 4)$

Step 5.3.3.3

Cancel the common factor of $9$ .

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Step 5.3.3.3.1

Cancel the common factor.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{9 (x - 32)}{8} \cdot \frac{1}{9} + 4)$

Step 5.3.3.3.2

Rewrite the expression.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x - 32}{8} + 4)$

Step 5.3.4

To write $4$ as a fraction with a common denominator, multiply by $\frac{8}{8}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x - 32}{8} + 4 \cdot \frac{8}{8})$

Step 5.3.5

Simplify terms.

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Step 5.3.5.1

Combine $4$ and $\frac{8}{8}$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x - 32}{8} + \frac{4 \cdot 8}{8})$

Step 5.3.5.2

Combine the numerators over the common denominator.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x - 32 + 4 \cdot 8}{8})$

Step 5.3.6

Simplify the numerator.

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Step 5.3.6.1

Multiply $4$ by $8$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x - 32 + 32}{8})$

Step 5.3.6.2

Add $- 32$ and $32$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x + 0}{8})$

Step 5.3.6.3

Add $x$ and $0$ .

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x}{8})$

Step 5.3.7

Cancel the common factor of $8$ .

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Step 5.3.7.1

Cancel the common factor.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = 8 (\frac{x}{8})$

Step 5.3.7.2

Rewrite the expression.

$f (\frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656) = x$

Step 5.4

Since $f^{- 1} (f (x)) = x$ and $f (f^{- 1} (x)) = x$ , then $f^{- 1} (x) = \frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656$ is the inverse of $f (x) = 8 (\frac{x^{\frac{1}{3}}}{9} + 4)$ .

$f^{- 1} (x) = \frac{729 x^{3}}{512} - \frac{2187 x^{2}}{16} + 4374 x - 46656$