Question

How do you simplify `(4/9)^-2`?

Answer 1

`(4/9)^(-2)=81/16`

Explanation:

`a^(-m)` is `1/a^m`

Hence `(4/9)^(-2)` is `(1/(4/9))^2`

or `(9/4)^2`

= `(9xx9)/(4xx4)`

= `81/16`