Algebra Examples

${(- 27 x^{- 9})}^{\frac{1}{3}}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

${(- 27 \frac{1}{x^{9}})}^{\frac{1}{3}}$

Step 2

Combine $- 27$ and $\frac{1}{x^{9}}$ .

${(\frac{- 27}{x^{9}})}^{\frac{1}{3}}$

Step 3

Move the negative in front of the fraction.

${(- \frac{27}{x^{9}})}^{\frac{1}{3}}$

Step 4

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

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Step 4.1

Apply the product rule to $- \frac{27}{x^{9}}$ .

${(- 1)}^{\frac{1}{3}} {(\frac{27}{x^{9}})}^{\frac{1}{3}}$

Step 4.2

Apply the product rule to $\frac{27}{x^{9}}$ .

${(- 1)}^{\frac{1}{3}} \frac{27^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 5

Rewrite $- 1$ as ${(- 1)}^{3}$ .

${({(- 1)}^{3})}^{\frac{1}{3}} \frac{27^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 6

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

${(- 1)}^{3 (\frac{1}{3})} \frac{27^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 7

Cancel the common factor of $3$ .

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Step 7.1

Cancel the common factor.

${(- 1)}^{3 (\frac{1}{3})} \frac{27^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 7.2

Rewrite the expression.

${(- 1)}^{1} \frac{27^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 8

Evaluate the exponent.

$- \frac{27^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 9

Simplify the numerator.

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Step 9.1

Rewrite $27$ as $3^{3}$ .

$- \frac{{(3^{3})}^{\frac{1}{3}}}{{(x^{9})}^{\frac{1}{3}}}$

Step 9.2

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

$- \frac{3^{3 (\frac{1}{3})}}{{(x^{9})}^{\frac{1}{3}}}$

Step 9.3

Cancel the common factor of $3$ .

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Step 9.3.1

Cancel the common factor.

$- \frac{3^{3 (\frac{1}{3})}}{{(x^{9})}^{\frac{1}{3}}}$

Step 9.3.2

Rewrite the expression.

$- \frac{3^{1}}{{(x^{9})}^{\frac{1}{3}}}$

Step 9.4

Evaluate the exponent.

$- \frac{3}{{(x^{9})}^{\frac{1}{3}}}$

Step 10

Multiply the exponents in ${(x^{9})}^{\frac{1}{3}}$ .

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Step 10.1

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

$- \frac{3}{x^{9 (\frac{1}{3})}}$

Step 10.2

Cancel the common factor of $3$ .

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Step 10.2.1

Factor $3$ out of $9$ .

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

Step 10.2.2

Cancel the common factor.

$- \frac{3}{x^{3 \cdot 3 \frac{1}{3}}}$

Step 10.2.3

Rewrite the expression.

$- \frac{3}{x^{3}}$