Precalculus Examples

$\frac{(3 x y^{- 2}) {(6 x^{- 3} y)}^{2}}{8 x^{- 1 (4 y^{- 3}) - 2}}$

Step 1

Move $y^{- 2}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{3 x {(6 x^{- 3} y)}^{2}}{8 x^{- 1 (4 y^{- 3}) - 2} y^{2}}$

Step 2

Simplify the numerator.

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Step 2.1

Apply the product rule to $6 x^{- 3} y$ .

$\frac{3 x {(6 x^{- 3})}^{2} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.2

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

$\frac{3 x {(6 \frac{1}{x^{3}})}^{2} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.3

Combine $6$ and $\frac{1}{x^{3}}$ .

$\frac{3 x {(\frac{6}{x^{3}})}^{2} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.4

Apply the product rule to $\frac{6}{x^{3}}$ .

$\frac{3 x \frac{6^{2}}{{(x^{3})}^{2}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.5

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

$\frac{3 x \frac{36}{{(x^{3})}^{2}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.6

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

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Step 2.6.1

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

$\frac{3 x \frac{36}{x^{3 \cdot 2}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.6.2

Multiply $3$ by $2$ .

$\frac{3 x \frac{36}{x^{6}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.7

Combine exponents.

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Step 2.7.1

Combine $3$ and $\frac{36}{x^{6}}$ .

$\frac{x \frac{3 \cdot 36}{x^{6}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.7.2

Multiply $3$ by $36$ .

$\frac{x \frac{108}{x^{6}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.7.3

Combine $x$ and $\frac{108}{x^{6}}$ .

$\frac{\frac{x \cdot 108}{x^{6}} y^{2}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.7.4

Combine $\frac{x \cdot 108}{x^{6}}$ and $y^{2}$ .

$\frac{\frac{x \cdot 108 y^{2}}{x^{6}}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.8

Reduce the expression $\frac{x \cdot 108 y^{2}}{x^{6}}$ by cancelling the common factors.

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Step 2.8.1

Factor $x$ out of $x \cdot 108 y^{2}$ .

$\frac{\frac{x (108 y^{2})}{x^{6}}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.8.2

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

$\frac{\frac{x (108 y^{2})}{x \cdot x^{5}}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.8.3

Cancel the common factor.

$\frac{\frac{x (108 y^{2})}{x \cdot x^{5}}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 2.8.4

Rewrite the expression.

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{- 1 \cdot 4 y^{- 3} - 2} y^{2}}$

Step 3

Simplify the denominator.

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Step 3.1

Multiply $- 1$ by $4$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{- 4 y^{- 3} - 2} y^{2}}$

Step 3.2

Simplify each term.

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Step 3.2.1

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

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{- 4 \frac{1}{y^{3}} - 2} y^{2}}$

Step 3.2.2

Combine $- 4$ and $\frac{1}{y^{3}}$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{\frac{- 4}{y^{3}} - 2} y^{2}}$

Step 3.2.3

Move the negative in front of the fraction.

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{- \frac{4}{y^{3}} - 2} y^{2}}$

Step 3.3

To write $- 2$ as a fraction with a common denominator, multiply by $\frac{y^{3}}{y^{3}}$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{- \frac{4}{y^{3}} - 2 \cdot \frac{y^{3}}{y^{3}}} y^{2}}$

Step 3.4

Combine $- 2$ and $\frac{y^{3}}{y^{3}}$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{- \frac{4}{y^{3}} + \frac{- 2 y^{3}}{y^{3}}} y^{2}}$

Step 3.5

Combine the numerators over the common denominator.

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{\frac{- 4 - 2 y^{3}}{y^{3}}} y^{2}}$

Step 3.6

Factor $2$ out of $- 4 - 2 y^{3}$ .

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Step 3.6.1

Factor $2$ out of $- 4$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{\frac{2 (- 2) - 2 y^{3}}{y^{3}}} y^{2}}$

Step 3.6.2

Factor $2$ out of $- 2 y^{3}$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{\frac{2 (- 2) + 2 (- y^{3})}{y^{3}}} y^{2}}$

Step 3.6.3

Factor $2$ out of $2 (- 2) + 2 (- y^{3})$ .

$\frac{\frac{108 y^{2}}{x^{5}}}{8 x^{\frac{2 (- 2 - y^{3})}{y^{3}}} y^{2}}$

Step 4

Multiply the numerator by the reciprocal of the denominator.

$\frac{108 y^{2}}{x^{5}} \cdot \frac{1}{8 x^{\frac{2 (- 2 - y^{3})}{y^{3}}} y^{2}}$

Step 5

Combine.

$\frac{108 y^{2} \cdot 1}{x^{5} (8 x^{\frac{2 (- 2 - y^{3})}{y^{3}}} y^{2})}$

Step 6

Multiply $x^{5}$ by $x^{\frac{2 (- 2 - y^{3})}{y^{3}}}$ by adding the exponents.

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Step 6.1

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

$\frac{108 y^{2} \cdot 1}{x^{\frac{2 (- 2 - y^{3})}{y^{3}}} x^{5} (8 y^{2})}$

Step 6.2

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

$\frac{108 y^{2} \cdot 1}{x^{\frac{2 (- 2 - y^{3})}{y^{3}} + 5} (8 y^{2})}$

Step 6.3

To write $5$ as a fraction with a common denominator, multiply by $\frac{y^{3}}{y^{3}}$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{2 (- 2 - y^{3})}{y^{3}} + \frac{5 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.4

Combine the numerators over the common denominator.

$\frac{108 y^{2} \cdot 1}{x^{\frac{2 (- 2 - y^{3}) + 5 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.5

Simplify the numerator.

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Step 6.5.1

Apply the distributive property.

$\frac{108 y^{2} \cdot 1}{x^{\frac{2 \cdot - 2 + 2 (- y^{3}) + 5 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.5.2

Multiply $2$ by $- 2$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{- 4 + 2 (- y^{3}) + 5 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.5.3

Multiply $- 1$ by $2$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{- 4 - 2 y^{3} + 5 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.5.4

Add $- 2 y^{3}$ and $5 y^{3}$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{- 4 + 3 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.6

Rewrite $- 4$ as $- 1 (4)$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{- 1 (4) + 3 y^{3}}{y^{3}}} (8 y^{2})}$

Step 6.7

Factor $- 1$ out of $3 y^{3}$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{- 1 (4) - (- 3 y^{3})}{y^{3}}} (8 y^{2})}$

Step 6.8

Factor $- 1$ out of $- 1 (4) - (- 3 y^{3})$ .

$\frac{108 y^{2} \cdot 1}{x^{\frac{- 1 (4 - 3 y^{3})}{y^{3}}} (8 y^{2})}$

Step 6.9

Move the negative in front of the fraction.

$\frac{108 y^{2} \cdot 1}{x^{- \frac{4 - 3 y^{3}}{y^{3}}} (8 y^{2})}$

Step 7

Multiply $108 y^{2}$ by $1$ .

$\frac{108 y^{2}}{x^{- \frac{4 - 3 y^{3}}{y^{3}}} (8 y^{2})}$

Step 8

Cancel the common factor of $108$ and $8$ .

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Step 8.1

Factor $4$ out of $108 y^{2}$ .

$\frac{4 (27 y^{2})}{x^{- \frac{4 - 3 y^{3}}{y^{3}}} (8 y^{2})}$

Step 8.2

Cancel the common factors.

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Step 8.2.1

Factor $4$ out of $x^{- \frac{4 - 3 y^{3}}{y^{3}}} (8 y^{2})$ .

$\frac{4 (27 y^{2})}{4 (x^{- \frac{4 - 3 y^{3}}{y^{3}}} (2 y^{2}))}$

Step 8.2.2

Cancel the common factor.

$\frac{4 (27 y^{2})}{4 (x^{- \frac{4 - 3 y^{3}}{y^{3}}} (2 y^{2}))}$

Step 8.2.3

Rewrite the expression.

$\frac{27 y^{2}}{x^{- \frac{4 - 3 y^{3}}{y^{3}}} (2 y^{2})}$

Step 9

Cancel the common factor of $y^{2}$ .

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Step 9.1

Cancel the common factor.

$\frac{27 y^{2}}{x^{- \frac{4 - 3 y^{3}}{y^{3}}} (2 y^{2})}$

Step 9.2

Rewrite the expression.

$\frac{27}{x^{- \frac{4 - 3 y^{3}}{y^{3}}} \cdot (2)}$

Step 10

Move $2$ to the left of $x^{- \frac{4 - 3 y^{3}}{y^{3}}}$ .

$\frac{27}{2 x^{- \frac{4 - 3 y^{3}}{y^{3}}}}$