Question

mmc de a2-b2;a2+2ab+b2;a2-2ab+b2

Answer 1

Fatorando:

$a^2-b^2 = (a+b)(a-b)\\ a^2+2ab+b^2 =(a+b)^2\\ a^2-2ab+b^2 =(a-b)^2\\ \\ \boxed{mmc=(a+b)(a-b)=a^2-b^2}$