(x-y)^2-10(y-x)+25
问题描述:
(x-y)^2-10(y-x)+25
答
(x-y+5)^2
答
(x-y)^2-10(y-x)+25
=(x-y)^2+10(x-y)+25
=(x-y+5)^2
答
x-y)^2-10(y-x)+25
=(x-y)^2+10(x-y)+25
=(x-y+5)^2