Question

efetue o quadrado do binômio :(4x^2-9y)^2

Answer 1

Olá!

$(4x^{2}-9y)^{2}~~=~~ (4x^{2})^{2}-2\cdot(4x^{2})\cdot(9y)+(9y)^{2}\\ \\ \\ 4x^{4}-72x^{2}y+81y^{2}$

:)