Question

(x+y)(x-y) mim ajudem e pra hj

Answer 1

Olá!

$(x + y)(x-y) \\ = x^2 -xy +xy -y^2 \\ = x^2 - \cancel{xy} + \cancel{xy} -y^2 \\ = x^2 + 0 -y^2$
$= \boxed{\boxed{x^2 -y^2} }} \end{array}\qquad\checkmark$

Bons estudos!!