Pre-Algebra Examples

$\frac{1}{9^{- 2}}$

Step 1

Move $9^{- 2}$ to the numerator using the negative exponent rule $\frac{1}{b^{- n}} = b^{n}$ .

$9^{2}$

Step 2

Raise $9$ to the power of $2$ .

$81$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$