Question

((a+b)(a-b))^2除以(a^2+2ab+b^2)+2ab＝?（具体过程）

Answer 1

((a+b)(a-b))^2=(a+b)^2*(a-b)^2

=(a^2+2ab+b^2)(a^2-2ab+b^2)

所以

[((a+b)(a-b))^2]/(a^2+2ab+b^2)+2ab

=(a^2-2ab+b^2)+2ab

=a^2+b^2.