因式分解:(x-y)^2-8(x-y)+16
问题描述:
因式分解:(x-y)^2-8(x-y)+16
答
(x-y-4)^2
答
(x-y)^2-8(x-y)+16=(x-y-4)^2
答
=(x-y)^2-2*4(x-y)+4^2=(x-y-4)^2