Algebra Examples

$f (- 2) = 9^{- 2}$

Step 1

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

$f (- 2) = \frac{1}{9^{2}}$

Step 2

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

$f (- 2) = \frac{1}{81}$