Question

Evaluate x^-2 for x = -3

Answer 1

well there is a formula.
\[\huge\color{red}{a^{-b}=\frac{1}{a^b}}\]so using this, \[\huge\color{blue}{x^{-2}=?}\]

Answer 2

when you get it, plug 3 for x.

Answer 3

@Cyclone3260, do you understand this now?

Answer 4

1
_
x^-2 <-- Something like this?

Answer 5

1
-
-6x

Answer 6

\[\huge\color{red}{x^{-2}=\frac{1}{x^2}}\]and knowing that x=3, then,
\[\huge\color{red}{\frac{1}{(3)^2}}~~~~->~~~~~\huge\color{green}{\frac{1}{9}}\]

Answer 7

my bad you put in -3 for x, but the answer is still same.

Answer 8

Thank you!

Answer 9

Anytime!

Answer 10

But what made the denominator be 9?

Answer 11

Oh I'm sorry, I get it now.

Answer 12

yes, it's \[\huge\color{purple}{\frac{1}{9}}\]