Algebra Examples

$\frac{{(x^{4} z)}^{\frac{1}{8}}}{x^{- \frac{1}{2}} z^{\frac{1}{4}}}$

Step 1

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

$\frac{{(x^{4} z)}^{\frac{1}{8}} x^{\frac{1}{2}}}{z^{\frac{1}{4}}}$

Step 2

Simplify the numerator.

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Step 2.1

Apply the product rule to $x^{4} z$ .

$\frac{{(x^{4})}^{\frac{1}{8}} z^{\frac{1}{8}} x^{\frac{1}{2}}}{z^{\frac{1}{4}}}$

Step 2.2

Multiply the exponents in ${(x^{4})}^{\frac{1}{8}}$ .

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Step 2.2.1

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

$\frac{x^{4 (\frac{1}{8})} z^{\frac{1}{8}} x^{\frac{1}{2}}}{z^{\frac{1}{4}}}$

Step 2.2.2

Cancel the common factor of $4$ .

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Step 2.2.2.1

Factor $4$ out of $8$ .

$\frac{x^{4 \frac{1}{4 (2)}} z^{\frac{1}{8}} x^{\frac{1}{2}}}{z^{\frac{1}{4}}}$

Step 2.2.2.2

Cancel the common factor.

$\frac{x^{4 \frac{1}{4 \cdot 2}} z^{\frac{1}{8}} x^{\frac{1}{2}}}{z^{\frac{1}{4}}}$

Step 2.2.2.3

Rewrite the expression.

$\frac{x^{\frac{1}{2}} z^{\frac{1}{8}} x^{\frac{1}{2}}}{z^{\frac{1}{4}}}$

Step 2.3

Combine exponents.

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Step 2.3.1

Multiply $x^{\frac{1}{2}}$ by $x^{\frac{1}{2}}$ by adding the exponents.

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Step 2.3.1.1

Move $x^{\frac{1}{2}}$ .

$\frac{x^{\frac{1}{2}} x^{\frac{1}{2}} z^{\frac{1}{8}}}{z^{\frac{1}{4}}}$

Step 2.3.1.2

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

$\frac{x^{\frac{1}{2} + \frac{1}{2}} z^{\frac{1}{8}}}{z^{\frac{1}{4}}}$

Step 2.3.1.3

Combine the numerators over the common denominator.

$\frac{x^{\frac{1 + 1}{2}} z^{\frac{1}{8}}}{z^{\frac{1}{4}}}$

Step 2.3.1.4

Add $1$ and $1$ .

$\frac{x^{\frac{2}{2}} z^{\frac{1}{8}}}{z^{\frac{1}{4}}}$

Step 2.3.1.5

Divide $2$ by $2$ .

$\frac{x^{1} z^{\frac{1}{8}}}{z^{\frac{1}{4}}}$

Step 2.3.2

Simplify $x^{1} z^{\frac{1}{8}}$ .

$\frac{x z^{\frac{1}{8}}}{z^{\frac{1}{4}}}$

Step 3

Move $z^{\frac{1}{8}}$ to the denominator using the negative exponent rule $b^{n} = \frac{1}{b^{- n}}$ .

$\frac{x}{z^{\frac{1}{4}} z^{- \frac{1}{8}}}$

Step 4

Multiply $z^{\frac{1}{4}}$ by $z^{- \frac{1}{8}}$ by adding the exponents.

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Step 4.1

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

$\frac{x}{z^{\frac{1}{4} - \frac{1}{8}}}$

Step 4.2

To write $\frac{1}{4}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{x}{z^{\frac{1}{4} \cdot \frac{2}{2} - \frac{1}{8}}}$

Step 4.3

Write each expression with a common denominator of $8$ , by multiplying each by an appropriate factor of $1$ .

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Step 4.3.1

Multiply $\frac{1}{4}$ by $\frac{2}{2}$ .

$\frac{x}{z^{\frac{2}{4 \cdot 2} - \frac{1}{8}}}$

Step 4.3.2

Multiply $4$ by $2$ .

$\frac{x}{z^{\frac{2}{8} - \frac{1}{8}}}$

Step 4.4

Combine the numerators over the common denominator.

$\frac{x}{z^{\frac{2 - 1}{8}}}$

Step 4.5

Subtract $1$ from $2$ .

$\frac{x}{z^{\frac{1}{8}}}$