# How do you simplify -(3)^-2?

May 10, 2018

$- \frac{1}{9}$

#### Explanation:

Recall that ${x}^{-} a = \frac{1}{x} ^ a ,$ so

$- {3}^{- 2} = - \frac{1}{3} ^ 2 = - \frac{1}{9}$

Note that we don't include the negative when squaring as it's not within any parentheses, indicating that it is independent.

May 10, 2018

I thinking the best thing to do is: $- {\left(3\right)}^{-} 2 = - \frac{1}{3} ^ 2 = - \frac{1}{9}$

#### Explanation:

Using the fact with a number in form ${x}^{-} 1 = \frac{1}{x}$