Precalculus Examples

$\sqrt[3]{\frac{x}{6}} - 7$

Step 1

Interchange the variables.

$x = \sqrt[3]{\frac{y}{6}} - 7$

Step 2

Solve for $y$ .

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Step 2.1

Rewrite the equation as $\sqrt[3]{\frac{y}{6}} - 7 = x$ .

$\sqrt[3]{\frac{y}{6}} - 7 = x$

Step 2.2

Add $7$ to both sides of the equation.

$\sqrt[3]{\frac{y}{6}} = x + 7$

Step 2.3

To remove the radical on the left side of the equation, cube both sides of the equation.

${\sqrt[3]{\frac{y}{6}}}^{3} = {(x + 7)}^{3}$

Step 2.4

Simplify each side of the equation.

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Step 2.4.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{\frac{y}{6}}$ as ${(\frac{y}{6})}^{\frac{1}{3}}$ .

${({(\frac{y}{6})}^{\frac{1}{3}})}^{3} = {(x + 7)}^{3}$

Step 2.4.2

Simplify the left side.

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Step 2.4.2.1

Simplify ${({(\frac{y}{6})}^{\frac{1}{3}})}^{3}$ .

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Step 2.4.2.1.1

Multiply the exponents in ${({(\frac{y}{6})}^{\frac{1}{3}})}^{3}$ .

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Step 2.4.2.1.1.1

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

${(\frac{y}{6})}^{\frac{1}{3} \cdot 3} = {(x + 7)}^{3}$

Step 2.4.2.1.1.2

Cancel the common factor of $3$ .

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Step 2.4.2.1.1.2.1

Cancel the common factor.

${(\frac{y}{6})}^{\frac{1}{3} \cdot 3} = {(x + 7)}^{3}$

Step 2.4.2.1.1.2.2

Rewrite the expression.

${(\frac{y}{6})}^{1} = {(x + 7)}^{3}$

Step 2.4.2.1.2

Simplify.

$\frac{y}{6} = {(x + 7)}^{3}$

Step 2.4.3

Simplify the right side.

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Step 2.4.3.1

Simplify ${(x + 7)}^{3}$ .

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Step 2.4.3.1.1

Use the Binomial Theorem.

$\frac{y}{6} = x^{3} + 3 x^{2} \cdot 7 + 3 x \cdot 7^{2} + 7^{3}$

Step 2.4.3.1.2

Simplify each term.

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Step 2.4.3.1.2.1

Multiply $7$ by $3$ .

$\frac{y}{6} = x^{3} + 21 x^{2} + 3 x \cdot 7^{2} + 7^{3}$

Step 2.4.3.1.2.2

Raise $7$ to the power of $2$ .

$\frac{y}{6} = x^{3} + 21 x^{2} + 3 x \cdot 49 + 7^{3}$

Step 2.4.3.1.2.3

Multiply $49$ by $3$ .

$\frac{y}{6} = x^{3} + 21 x^{2} + 147 x + 7^{3}$

Step 2.4.3.1.2.4

Raise $7$ to the power of $3$ .

$\frac{y}{6} = x^{3} + 21 x^{2} + 147 x + 343$

Step 2.5

Solve for $y$ .

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Step 2.5.1

Multiply both sides of the equation by $6$ .

$6 \frac{y}{6} = 6 (x^{3} + 21 x^{2} + 147 x + 343)$

Step 2.5.2

Simplify both sides of the equation.

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Step 2.5.2.1

Simplify the left side.

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Step 2.5.2.1.1

Cancel the common factor of $6$ .

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Step 2.5.2.1.1.1

Cancel the common factor.

$6 \frac{y}{6} = 6 (x^{3} + 21 x^{2} + 147 x + 343)$

Step 2.5.2.1.1.2

Rewrite the expression.

$y = 6 (x^{3} + 21 x^{2} + 147 x + 343)$

Step 2.5.2.2

Simplify the right side.

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Step 2.5.2.2.1

Simplify $6 (x^{3} + 21 x^{2} + 147 x + 343)$ .

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Step 2.5.2.2.1.1

Apply the distributive property.

$y = 6 x^{3} + 6 (21 x^{2}) + 6 (147 x) + 6 \cdot 343$

Step 2.5.2.2.1.2

Simplify.

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Step 2.5.2.2.1.2.1

Multiply $21$ by $6$ .

$y = 6 x^{3} + 126 x^{2} + 6 (147 x) + 6 \cdot 343$

Step 2.5.2.2.1.2.2

Multiply $147$ by $6$ .

$y = 6 x^{3} + 126 x^{2} + 882 x + 6 \cdot 343$

Step 2.5.2.2.1.2.3

Multiply $6$ by $343$ .

$y = 6 x^{3} + 126 x^{2} + 882 x + 2058$

Step 3

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

$f^{- 1} (x) = 6 x^{3} + 126 x^{2} + 882 x + 2058$

Step 4

Verify if $f^{- 1} (x) = 6 x^{3} + 126 x^{2} + 882 x + 2058$ is the inverse of $f (x) = \sqrt[3]{\frac{x}{6}} - 7$ .

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Step 4.1

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

Step 4.2

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

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Step 4.2.1

Set up the composite result function.

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

Step 4.2.2

Evaluate $f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7)$ by substituting in the value of $f$ into $f^{- 1}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\sqrt[3]{\frac{x}{6}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3

Simplify each term.

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Step 4.2.3.1

Simplify each term.

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Step 4.2.3.1.1

Rewrite $\sqrt[3]{\frac{x}{6}}$ as $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x}}{\sqrt[3]{6}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.2

Multiply $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ by $\frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x}}{\sqrt[3]{6}} \cdot \frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3

Combine and simplify the denominator.

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Step 4.2.3.1.3.1

Multiply $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ by $\frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{\sqrt[3]{6} {\sqrt[3]{6}}^{2}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.2

Raise $\sqrt[3]{6}$ to the power of $1$ .

Step 4.2.3.1.3.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{1 + 2}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.4

Add $1$ and $2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{3}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.5

Rewrite ${\sqrt[3]{6}}^{3}$ as $6$ .

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Step 4.2.3.1.3.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{6}$ as $6^{\frac{1}{3}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{{(6^{\frac{1}{3}})}^{3}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.5.2

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6^{\frac{1}{3} \cdot 3}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.5.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6^{\frac{3}{3}}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.5.4

Cancel the common factor of $3$ .

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Step 4.2.3.1.3.5.4.1

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6^{\frac{3}{3}}} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.5.4.2

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.3.5.5

Evaluate the exponent.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.4

Simplify the numerator.

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Step 4.2.3.1.4.1

Rewrite ${\sqrt[3]{6}}^{2}$ as $\sqrt[3]{6^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} \sqrt[3]{6^{2}}}{6} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.4.2

Raise $6$ to the power of $2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x} \sqrt[3]{36}}{6} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.1.5

Combine using the product rule for radicals.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 {(\frac{\sqrt[3]{x \cdot 36}}{6} - 7)}^{3} + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.2

Use the Binomial Theorem.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 ({(\frac{\sqrt[3]{x \cdot 36}}{6})}^{3} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3

Simplify each term.

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Step 4.2.3.3.1

Apply the product rule to $\frac{\sqrt[3]{x \cdot 36}}{6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{{\sqrt[3]{x \cdot 36}}^{3}}{6^{3}} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.2

Simplify the numerator.

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Step 4.2.3.3.2.1

Rewrite ${\sqrt[3]{x \cdot 36}}^{3}$ as $x \cdot 36$ .

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Step 4.2.3.3.2.1.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{x \cdot 36}$ as ${(x \cdot 36)}^{\frac{1}{3}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{{({(x \cdot 36)}^{\frac{1}{3}})}^{3}}{6^{3}} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.2.1.2

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{{(x \cdot 36)}^{\frac{1}{3} \cdot 3}}{6^{3}} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.2.1.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{{(x \cdot 36)}^{\frac{3}{3}}}{6^{3}} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.2.1.4

Cancel the common factor of $3$ .

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Step 4.2.3.3.2.1.4.1

Cancel the common factor.

Step 4.2.3.3.2.1.4.2

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x \cdot 36}{6^{3}} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.2.1.5

Simplify.

Step 4.2.3.3.2.2

Move $36$ to the left of $x$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{36 x}{6^{3}} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.3

Raise $6$ to the power of $3$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{36 x}{216} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.4

Cancel the common factor of $36$ and $216$ .

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Step 4.2.3.3.4.1

Factor $36$ out of $36 x$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{36 (x)}{216} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.4.2

Cancel the common factors.

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Step 4.2.3.3.4.2.1

Factor $36$ out of $216$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{36 x}{36 \cdot 6} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.4.2.2

Cancel the common factor.

Step 4.2.3.3.4.2.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 {(\frac{\sqrt[3]{x \cdot 36}}{6})}^{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.5

Apply the product rule to $\frac{\sqrt[3]{x \cdot 36}}{6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{{\sqrt[3]{x \cdot 36}}^{2}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6

Simplify the numerator.

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Step 4.2.3.3.6.1

Rewrite ${\sqrt[3]{x \cdot 36}}^{2}$ as $\sqrt[3]{{(x \cdot 36)}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{{(x \cdot 36)}^{2}}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.2

Apply the product rule to $x \cdot 36$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{x^{2} \cdot 36^{2}}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{x^{2} \cdot 1296}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.4

Rewrite $x^{2} \cdot 1296$ as $6^{3} \cdot (x^{2} \cdot 6)$ .

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Step 4.2.3.3.6.4.1

Factor $216$ out of $1296$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{x^{2} \cdot (216 (6))}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.4.2

Rewrite $216$ as $6^{3}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{x^{2} \cdot (6^{3} \cdot 6)}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.4.3

Reorder $x^{2}$ and $6^{3}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{6^{3} \cdot x^{2} \cdot 6}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.4.4

Add parentheses.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{\sqrt[3]{6^{3} \cdot (x^{2} \cdot 6)}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.6.5

Pull terms out from under the radical.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{6 \sqrt[3]{x^{2} \cdot 6}}{6^{2}}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.7

Raise $6$ to the power of $2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{6 \sqrt[3]{x^{2} \cdot 6}}{36}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.8

Cancel the common factor of $3$ .

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Step 4.2.3.3.8.1

Factor $3$ out of $36$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{6 \sqrt[3]{x^{2} \cdot 6}}{3 (12)}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.8.2

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + 3 (\frac{6 \sqrt[3]{x^{2} \cdot 6}}{3 \cdot 12}) \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.8.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{6 \sqrt[3]{x^{2} \cdot 6}}{12} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.9

Cancel the common factor of $6$ and $12$ .

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Step 4.2.3.3.9.1

Factor $6$ out of $6 \sqrt[3]{x^{2} \cdot 6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{6 (\sqrt[3]{x^{2} \cdot 6})}{12} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.9.2

Cancel the common factors.

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Step 4.2.3.3.9.2.1

Factor $6$ out of $12$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{6 \sqrt[3]{x^{2} \cdot 6}}{6 \cdot 2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.9.2.2

Cancel the common factor.

Step 4.2.3.3.9.2.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{\sqrt[3]{x^{2} \cdot 6}}{2} \cdot - 7 + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.10

Combine $\frac{\sqrt[3]{x^{2} \cdot 6}}{2}$ and $- 7$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{\sqrt[3]{x^{2} \cdot 6} \cdot - 7}{2} + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.11

Move $6$ to the left of $x^{2}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{\sqrt[3]{6 \cdot x^{2}} \cdot - 7}{2} + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.12

Move $- 7$ to the left of $\sqrt[3]{6 \cdot x^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} + \frac{- 7 \cdot \sqrt[3]{6 \cdot x^{2}}}{2} + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.13

Move the negative in front of the fraction.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{(7) \cdot \sqrt[3]{6 \cdot x^{2}}}{2} + 3 (\frac{\sqrt[3]{x \cdot 36}}{6}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.14

Cancel the common factor of $3$ .

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Step 4.2.3.3.14.1

Factor $3$ out of $6$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + 3 (\frac{\sqrt[3]{x \cdot 36}}{3 (2)}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.14.2

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + 3 (\frac{\sqrt[3]{x \cdot 36}}{3 \cdot 2}) \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.14.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + \frac{\sqrt[3]{x \cdot 36}}{2} \cdot {(- 7)}^{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.15

Raise $- 7$ to the power of $2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + \frac{\sqrt[3]{x \cdot 36}}{2} \cdot 49 + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.16

Combine $\frac{\sqrt[3]{x \cdot 36}}{2}$ and $49$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + \frac{\sqrt[3]{x \cdot 36} \cdot 49}{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.17

Move $36$ to the left of $x$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + \frac{\sqrt[3]{36 \cdot x} \cdot 49}{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.18

Move $49$ to the left of $\sqrt[3]{36 \cdot x}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + \frac{49 \cdot \sqrt[3]{36 \cdot x}}{2} + {(- 7)}^{3}) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.3.19

Raise $- 7$ to the power of $3$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6} - \frac{7 \sqrt[3]{6 x^{2}}}{2} + \frac{49 \sqrt[3]{36 x}}{2} - 343) + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.4

Apply the distributive property.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = 6 (\frac{x}{6}) + 6 (- \frac{7 \sqrt[3]{6 x^{2}}}{2}) + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5

Simplify.

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Step 4.2.3.5.1

Cancel the common factor of $6$ .

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Step 4.2.3.5.1.1

Cancel the common factor.

Step 4.2.3.5.1.2

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 6 (- \frac{7 \sqrt[3]{6 x^{2}}}{2}) + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.2

Cancel the common factor of $2$ .

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Step 4.2.3.5.2.1

Move the leading negative in $- \frac{7 \sqrt[3]{6 x^{2}}}{2}$ into the numerator.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 6 (\frac{- 7 \sqrt[3]{6 x^{2}}}{2}) + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.2.2

Factor $2$ out of $6$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 2 (3) (\frac{- 7 \sqrt[3]{6 x^{2}}}{2}) + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.2.3

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 2 \cdot (3 (\frac{- 7 \sqrt[3]{6 x^{2}}}{2})) + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.2.4

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 3 (- 7 \sqrt[3]{6 x^{2}}) + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.3

Multiply $- 7$ by $3$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 6 (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.4

Cancel the common factor of $2$ .

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Step 4.2.3.5.4.1

Factor $2$ out of $6$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 2 (3) (\frac{49 \sqrt[3]{36 x}}{2}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.4.2

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 2 \cdot (3 (\frac{49 \sqrt[3]{36 x}}{2})) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.4.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 3 (49 \sqrt[3]{36 x}) + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.5

Multiply $49$ by $3$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} + 6 \cdot - 343 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.5.6

Multiply $6$ by $- 343$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\sqrt[3]{\frac{x}{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6

Simplify each term.

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Step 4.2.3.6.1

Rewrite $\sqrt[3]{\frac{x}{6}}$ as $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x}}{\sqrt[3]{6}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.2

Multiply $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ by $\frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x}}{\sqrt[3]{6}} \cdot \frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3

Combine and simplify the denominator.

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Step 4.2.3.6.3.1

Multiply $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ by $\frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{\sqrt[3]{6} {\sqrt[3]{6}}^{2}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.2

Raise $\sqrt[3]{6}$ to the power of $1$ .

Step 4.2.3.6.3.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{1 + 2}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.4

Add $1$ and $2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{3}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.5

Rewrite ${\sqrt[3]{6}}^{3}$ as $6$ .

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Step 4.2.3.6.3.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{6}$ as $6^{\frac{1}{3}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{{(6^{\frac{1}{3}})}^{3}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.5.2

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6^{\frac{1}{3} \cdot 3}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.5.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6^{\frac{3}{3}}} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.5.4

Cancel the common factor of $3$ .

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Step 4.2.3.6.3.5.4.1

Cancel the common factor.

Step 4.2.3.6.3.5.4.2

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.3.5.5

Evaluate the exponent.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{6} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.4

Simplify the numerator.

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Step 4.2.3.6.4.1

Rewrite ${\sqrt[3]{6}}^{2}$ as $\sqrt[3]{6^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} \sqrt[3]{6^{2}}}{6} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.4.2

Raise $6$ to the power of $2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x} \sqrt[3]{36}}{6} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.6.5

Combine using the product rule for radicals.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 {(\frac{\sqrt[3]{x \cdot 36}}{6} - 7)}^{2} + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.7

Rewrite ${(\frac{\sqrt[3]{x \cdot 36}}{6} - 7)}^{2}$ as $(\frac{\sqrt[3]{x \cdot 36}}{6} - 7) (\frac{\sqrt[3]{x \cdot 36}}{6} - 7)$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 ((\frac{\sqrt[3]{x \cdot 36}}{6} - 7) (\frac{\sqrt[3]{x \cdot 36}}{6} - 7)) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.8

Expand $(\frac{\sqrt[3]{x \cdot 36}}{6} - 7) (\frac{\sqrt[3]{x \cdot 36}}{6} - 7)$ using the FOIL Method.

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Step 4.2.3.8.1

Apply the distributive property.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x \cdot 36}}{6} \cdot (\frac{\sqrt[3]{x \cdot 36}}{6} - 7) - 7 (\frac{\sqrt[3]{x \cdot 36}}{6} - 7)) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.8.2

Apply the distributive property.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x \cdot 36}}{6} \cdot \frac{\sqrt[3]{x \cdot 36}}{6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 (\frac{\sqrt[3]{x \cdot 36}}{6} - 7)) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.8.3

Apply the distributive property.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x \cdot 36}}{6} \cdot \frac{\sqrt[3]{x \cdot 36}}{6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9

Simplify and combine like terms.

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Step 4.2.3.9.1

Simplify each term.

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Step 4.2.3.9.1.1

Multiply $\frac{\sqrt[3]{x \cdot 36}}{6} \cdot \frac{\sqrt[3]{x \cdot 36}}{6}$ .

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Step 4.2.3.9.1.1.1

Multiply $\frac{\sqrt[3]{x \cdot 36}}{6}$ by $\frac{\sqrt[3]{x \cdot 36}}{6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x \cdot 36} \sqrt[3]{x \cdot 36}}{6 \cdot 6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.1.2

Raise $\sqrt[3]{x \cdot 36}$ to the power of $1$ .

Step 4.2.3.9.1.1.3

Raise $\sqrt[3]{x \cdot 36}$ to the power of $1$ .

Step 4.2.3.9.1.1.4

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{{\sqrt[3]{x \cdot 36}}^{1 + 1}}{6 \cdot 6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.1.5

Add $1$ and $1$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{{\sqrt[3]{x \cdot 36}}^{2}}{6 \cdot 6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.1.6

Multiply $6$ by $6$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{{\sqrt[3]{x \cdot 36}}^{2}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2

Simplify the numerator.

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Step 4.2.3.9.1.2.1

Rewrite ${\sqrt[3]{x \cdot 36}}^{2}$ as $\sqrt[3]{{(x \cdot 36)}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{{(x \cdot 36)}^{2}}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.2

Apply the product rule to $x \cdot 36$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 36^{2}}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.3

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 1296}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.4

Rewrite $x^{2} \cdot 1296$ as $6^{3} \cdot (x^{2} \cdot 6)$ .

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Step 4.2.3.9.1.2.4.1

Factor $216$ out of $1296$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot (216 (6))}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.4.2

Rewrite $216$ as $6^{3}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot (6^{3} \cdot 6)}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.4.3

Reorder $x^{2}$ and $6^{3}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{6^{3} \cdot x^{2} \cdot 6}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.4.4

Add parentheses.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{6^{3} \cdot (x^{2} \cdot 6)}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.2.5

Pull terms out from under the radical.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{6 \sqrt[3]{x^{2} \cdot 6}}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.3

Cancel the common factor of $6$ and $36$ .

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Step 4.2.3.9.1.3.1

Factor $6$ out of $6 \sqrt[3]{x^{2} \cdot 6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{6 (\sqrt[3]{x^{2} \cdot 6})}{36} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.3.2

Cancel the common factors.

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Step 4.2.3.9.1.3.2.1

Factor $6$ out of $36$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{6 \sqrt[3]{x^{2} \cdot 6}}{6 \cdot 6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.3.2.2

Cancel the common factor.

Step 4.2.3.9.1.3.2.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} + \frac{\sqrt[3]{x \cdot 36}}{6} \cdot - 7 - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.4

Combine $\frac{\sqrt[3]{x \cdot 36}}{6}$ and $- 7$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} + \frac{\sqrt[3]{x \cdot 36} \cdot - 7}{6} - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.5

Move $36$ to the left of $x$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} + \frac{\sqrt[3]{36 \cdot x} \cdot - 7}{6} - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.6

Move $- 7$ to the left of $\sqrt[3]{36 \cdot x}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} + \frac{- 7 \cdot \sqrt[3]{36 \cdot x}}{6} - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.7

Move the negative in front of the fraction.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - \frac{(7) \cdot \sqrt[3]{36 \cdot x}}{6} - 7 \frac{\sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.8

Combine $- 7$ and $\frac{\sqrt[3]{x \cdot 36}}{6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - \frac{7 \sqrt[3]{36 x}}{6} + \frac{- 7 \sqrt[3]{x \cdot 36}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.9

Move $36$ to the left of $x$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - \frac{7 \sqrt[3]{36 x}}{6} + \frac{- 7 \sqrt[3]{36 \cdot x}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.10

Move the negative in front of the fraction.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - \frac{7 \sqrt[3]{36 x}}{6} - \frac{(7) \sqrt[3]{36 \cdot x}}{6} - 7 \cdot - 7) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.1.11

Multiply $- 7$ by $- 7$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - \frac{7 \sqrt[3]{36 x}}{6} - \frac{7 \sqrt[3]{36 x}}{6} + 49) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.9.2

Subtract $\frac{7 \sqrt[3]{36 x}}{6}$ from $- \frac{7 \sqrt[3]{36 x}}{6}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - 2 \frac{7 \sqrt[3]{36 x}}{6} + 49) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.10

Simplify each term.

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Step 4.2.3.10.1

Cancel the common factor of $2$ .

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Step 4.2.3.10.1.1

Factor $2$ out of $- 2$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} + 2 (- 1) (\frac{7 \sqrt[3]{36 x}}{6}) + 49) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.10.1.2

Factor $2$ out of $6$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} + 2 \cdot (- 1 \frac{7 \sqrt[3]{36 x}}{2 \cdot 3}) + 49) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.10.1.3

Cancel the common factor.

Step 4.2.3.10.1.4

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - 1 \frac{7 \sqrt[3]{36 x}}{3} + 49) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.10.2

Rewrite $- 1 \frac{7 \sqrt[3]{36 x}}{3}$ as $- \frac{7 \sqrt[3]{36 x}}{3}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6} - \frac{7 \sqrt[3]{36 x}}{3} + 49) + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.11

Apply the distributive property.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 126 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6}) + 126 (- \frac{7 \sqrt[3]{36 x}}{3}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12

Simplify.

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Step 4.2.3.12.1

Cancel the common factor of $6$ .

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Step 4.2.3.12.1.1

Factor $6$ out of $126$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 6 (21) (\frac{\sqrt[3]{x^{2} \cdot 6}}{6}) + 126 (- \frac{7 \sqrt[3]{36 x}}{3}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.1.2

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 6 \cdot (21 (\frac{\sqrt[3]{x^{2} \cdot 6}}{6})) + 126 (- \frac{7 \sqrt[3]{36 x}}{3}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.1.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} + 126 (- \frac{7 \sqrt[3]{36 x}}{3}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.2

Cancel the common factor of $3$ .

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Step 4.2.3.12.2.1

Move the leading negative in $- \frac{7 \sqrt[3]{36 x}}{3}$ into the numerator.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} + 126 (\frac{- 7 \sqrt[3]{36 x}}{3}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.2.2

Factor $3$ out of $126$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} + 3 (42) (\frac{- 7 \sqrt[3]{36 x}}{3}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.2.3

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} + 3 \cdot (42 (\frac{- 7 \sqrt[3]{36 x}}{3})) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.2.4

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} + 42 (- 7 \sqrt[3]{36 x}) + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.3

Multiply $- 7$ by $42$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 126 \cdot 49 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.12.4

Multiply $126$ by $49$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 882 (\sqrt[3]{\frac{x}{6}} - 7) + 2058$

Step 4.2.3.13

Simplify each term.

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Step 4.2.3.13.1

Rewrite $\sqrt[3]{\frac{x}{6}}$ as $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 882 (\frac{\sqrt[3]{x}}{\sqrt[3]{6}} - 7) + 2058$

Step 4.2.3.13.2

Multiply $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ by $\frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}}$ .

Step 4.2.3.13.3

Combine and simplify the denominator.

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Step 4.2.3.13.3.1

Multiply $\frac{\sqrt[3]{x}}{\sqrt[3]{6}}$ by $\frac{{\sqrt[3]{6}}^{2}}{{\sqrt[3]{6}}^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 882 (\frac{\sqrt[3]{x} {\sqrt[3]{6}}^{2}}{\sqrt[3]{6} {\sqrt[3]{6}}^{2}} - 7) + 2058$

Step 4.2.3.13.3.2

Raise $\sqrt[3]{6}$ to the power of $1$ .

Step 4.2.3.13.3.3

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

Step 4.2.3.13.3.4

Add $1$ and $2$ .

Step 4.2.3.13.3.5

Rewrite ${\sqrt[3]{6}}^{3}$ as $6$ .

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Step 4.2.3.13.3.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{6}$ as $6^{\frac{1}{3}}$ .

Step 4.2.3.13.3.5.2

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

Step 4.2.3.13.3.5.3

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

Step 4.2.3.13.3.5.4

Cancel the common factor of $3$ .

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Step 4.2.3.13.3.5.4.1

Cancel the common factor.

Step 4.2.3.13.3.5.4.2

Rewrite the expression.

Step 4.2.3.13.3.5.5

Evaluate the exponent.

Step 4.2.3.13.4

Simplify the numerator.

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Step 4.2.3.13.4.1

Rewrite ${\sqrt[3]{6}}^{2}$ as $\sqrt[3]{6^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 882 (\frac{\sqrt[3]{x} \sqrt[3]{6^{2}}}{6} - 7) + 2058$

Step 4.2.3.13.4.2

Raise $6$ to the power of $2$ .

Step 4.2.3.13.5

Combine using the product rule for radicals.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 882 (\frac{\sqrt[3]{x \cdot 36}}{6} - 7) + 2058$

Step 4.2.3.14

Apply the distributive property.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 882 (\frac{\sqrt[3]{x \cdot 36}}{6}) + 882 \cdot - 7 + 2058$

Step 4.2.3.15

Cancel the common factor of $6$ .

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Step 4.2.3.15.1

Factor $6$ out of $882$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 6 (147) (\frac{\sqrt[3]{x \cdot 36}}{6}) + 882 \cdot - 7 + 2058$

Step 4.2.3.15.2

Cancel the common factor.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 6 \cdot (147 (\frac{\sqrt[3]{x \cdot 36}}{6})) + 882 \cdot - 7 + 2058$

Step 4.2.3.15.3

Rewrite the expression.

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 147 \sqrt[3]{x \cdot 36} + 882 \cdot - 7 + 2058$

Step 4.2.3.16

Multiply $882$ by $- 7$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 147 \sqrt[3]{x \cdot 36} - 6174 + 2058$

Step 4.2.4

Combine the opposite terms in $x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 6174 + 147 \sqrt[3]{x \cdot 36} - 6174 + 2058$ .

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Step 4.2.4.1

Subtract $6174$ from $6174$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 0 + 147 \sqrt[3]{x \cdot 36} + 2058$

Step 4.2.4.2

Add $x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x}$ and $0$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} - 2058 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36} + 2058$

Step 4.2.4.3

Add $- 2058$ and $2058$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} + 0 + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36}$

Step 4.2.4.4

Add $x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x}$ and $0$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 147 \sqrt[3]{36 x} + 21 \sqrt[3]{x^{2} \cdot 6} - 294 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36}$

Step 4.2.5

Add $- 21 \sqrt[3]{6 x^{2}}$ and $21 \sqrt[3]{x^{2} \cdot 6}$ .

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Step 4.2.5.1

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

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 21 \sqrt[3]{6 x^{2}} + 21 \sqrt[3]{6 \cdot x^{2}} + 147 \sqrt[3]{36 x} - 294 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36}$

Step 4.2.5.2

Add $- 21 \sqrt[3]{6 x^{2}}$ and $21 \sqrt[3]{6 \cdot x^{2}}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 0 + 147 \sqrt[3]{36 x} - 294 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36}$

Step 4.2.6

Add $x$ and $0$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 147 \sqrt[3]{36 x} - 294 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36}$

Step 4.2.7

Subtract $294 \sqrt[3]{36 x}$ from $147 \sqrt[3]{36 x}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 147 \sqrt[3]{36 x} + 147 \sqrt[3]{x \cdot 36}$

Step 4.2.8

Add $- 147 \sqrt[3]{36 x}$ and $147 \sqrt[3]{x \cdot 36}$ .

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Step 4.2.8.1

Reorder $x$ and $36$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x - 147 \sqrt[3]{36 x} + 147 \sqrt[3]{36 \cdot x}$

Step 4.2.8.2

Add $- 147 \sqrt[3]{36 x}$ and $147 \sqrt[3]{36 \cdot x}$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x + 0$

Step 4.2.9

Add $x$ and $0$ .

$f^{- 1} (\sqrt[3]{\frac{x}{6}} - 7) = x$

Step 4.3

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

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Step 4.3.1

Set up the composite result function.

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

Step 4.3.2

Evaluate $f (6 x^{3} + 126 x^{2} + 882 x + 2058)$ by substituting in the value of $f^{- 1}$ into $f$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 x^{3} + 126 x^{2} + 882 x + 2058}{6}} - 7$

Step 4.3.3

Simplify each term.

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Step 4.3.3.1

Factor $6$ out of $6 x^{3} + 126 x^{2} + 882 x + 2058$ .

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Step 4.3.3.1.1

Factor $6$ out of $6 x^{3}$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3}) + 126 x^{2} + 882 x + 2058}{6}} - 7$

Step 4.3.3.1.2

Factor $6$ out of $126 x^{2}$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3}) + 6 (21 x^{2}) + 882 x + 2058}{6}} - 7$

Step 4.3.3.1.3

Factor $6$ out of $882 x$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3}) + 6 (21 x^{2}) + 6 (147 x) + 2058}{6}} - 7$

Step 4.3.3.1.4

Factor $6$ out of $2058$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 x^{3} + 6 (21 x^{2}) + 6 (147 x) + 6 \cdot 343}{6}} - 7$

Step 4.3.3.1.5

Factor $6$ out of $6 x^{3} + 6 (21 x^{2})$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3} + 21 x^{2}) + 6 (147 x) + 6 \cdot 343}{6}} - 7$

Step 4.3.3.1.6

Factor $6$ out of $6 (x^{3} + 21 x^{2}) + 6 (147 x)$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3} + 21 x^{2} + 147 x) + 6 \cdot 343}{6}} - 7$

Step 4.3.3.1.7

Factor $6$ out of $6 (x^{3} + 21 x^{2} + 147 x) + 6 \cdot 343$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3} + 21 x^{2} + 147 x + 343)}{6}} - 7$

Step 4.3.3.2

Reduce the expression by cancelling the common factors.

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Step 4.3.3.2.1

Reduce the expression $\frac{6 (x^{3} + 21 x^{2} + 147 x + 343)}{6}$ by cancelling the common factors.

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Step 4.3.3.2.1.1

Cancel the common factor.

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{6 (x^{3} + 21 x^{2} + 147 x + 343)}{6}} - 7$

Step 4.3.3.2.1.2

Rewrite the expression.

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{\frac{x^{3} + 21 x^{2} + 147 x + 343}{1}} - 7$

Step 4.3.3.2.2

Divide $x^{3} + 21 x^{2} + 147 x + 343$ by $1$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{x^{3} + 21 x^{2} + 147 x + 343} - 7$

Step 4.3.3.3

Make each term match the terms from the binomial theorem formula.

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{x^{3} + 3 \cdot (7 x^{2}) + 3 \cdot (7^{2} x) + 7^{3}} - 7$

Step 4.3.3.4

Factor $x^{3} + 3 \cdot 7 x^{2} + 3 \cdot 7^{2} x + 7^{3}$ using the binomial theorem.

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = \sqrt[3]{{(x + 7)}^{3}} - 7$

Step 4.3.3.5

Pull terms out from under the radical, assuming real numbers.

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = x + 7 - 7$

Step 4.3.4

Combine the opposite terms in $x + 7 - 7$ .

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Step 4.3.4.1

Subtract $7$ from $7$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = x + 0$

Step 4.3.4.2

Add $x$ and $0$ .

$f (6 x^{3} + 126 x^{2} + 882 x + 2058) = x$

Step 4.4

Since $f^{- 1} (f (x)) = x$ and $f (f^{- 1} (x)) = x$ , then $f^{- 1} (x) = 6 x^{3} + 126 x^{2} + 882 x + 2058$ is the inverse of $f (x) = \sqrt[3]{\frac{x}{6}} - 7$ .

$f^{- 1} (x) = 6 x^{3} + 126 x^{2} + 882 x + 2058$