a(x-y)^2-2x-2y
问题描述:
a(x-y)^2-2x-2y
因式分解
答
a(x-y)^2-2x-2y
=ax^2+ay^2-2axy-2x-2y是因式分解不能因式分解除非是a(x-y)^2-2x+2y=a(x-y)^2-2(x-y)=(x-y)(ax-ay-2)好吧