Question

could you help me with math

Answer 1

$3^{-2}$

When we have negative exponents we can rewrite them as apositive exponent using a fraction

$a^{-b}=\frac{1}{a^b}$

according to this the problem cam be writen as

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