Question

Simplifique essa expressão

Answer 1

$(\dfrac{ab}{2})^2\times(\dfrac{ab^2}{3})^{-2} =\\\\ (\dfrac{a^2b^2}{4})\times(\dfrac{3}{ab^2})^{2} =\\\\ (\dfrac{a^2b^2}{4})\times(\dfrac{9}{a^2b^4})=\\\\ \dfrac{9}{4b^2}$

Espero que tenha entendido!