Basic Math Examples

$\frac{u^{- 4}}{u^{- 7}}$

Step 1

Move $u^{- 7}$ to the numerator using the negative exponent rule $\frac{1}{b^{- n}} = b^{n}$ .

$u^{- 4} u^{7}$

Step 2

Multiply $u^{- 4}$ by $u^{7}$ by adding the exponents.

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Step 2.1

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

$u^{- 4 + 7}$

Step 2.2

Add $- 4$ and $7$ .

$u^{3}$