Question

(3x squared)to the power of -2 

Answer 1

$(3x^2)^{-2}=\frac{1}{9}x^{-4}=\frac{1}{9x^4}$

Answer 2

$(3x^2)^{-2}\to\boxed{1/(3x^{2})^2\to\frac{1}{9x^4}}$