因式分解(x-y)^2-1/2(x-y)+1/16
问题描述：
因式分解(x-y)^2-1/2(x-y)+1/16
答
(x-y)^2-1/2(x-y)+1/16
=(x-y)^2-2×(x-y)×1/4+(1/4)^2
=[(x-y)-1/4]^2
=(x-y-1/4)^2