Algebra Examples

$\frac{15 x^{- 3}}{x}$

Step 1

Move $x^{- 3}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{15}{x \cdot x^{3}}$

Step 2

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

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Step 2.1

Multiply $x$ by $x^{3}$ .

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Step 2.1.1

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

$\frac{15}{x^{1} x^{3}}$

Step 2.1.2

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

$\frac{15}{x^{1 + 3}}$

Step 2.2

Add $1$ and $3$ .

$\frac{15}{x^{4}}$