16减8乖以括号x-y加x一y的平方因式分解
问题描述:
16减8乖以括号x-y加x一y的平方因式分解
答
16-8(x-y)+(x+y)^2
=(x+y-4)^2sorry打错了,是16-8(x-y)+(xy)^2=(xy-4)^216-8(x-y)+(x-y)^2=(x-y-4)^2谢谢你!!