因式分解:(x-y)方-4(x方-y方)+4(x+y)方

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 12:45:28
因式分解:(x-y)方-4(x方-y方)+4(x+y)方
x){:{=O;^,_~, JgvhTJ ~O6 I*']~ v9qF E@2H@$V` SaefeEtƕ@U6yv  t

因式分解:(x-y)方-4(x方-y方)+4(x+y)方
因式分解:(x-y)方-4(x方-y方)+4(x+y)方

因式分解:(x-y)方-4(x方-y方)+4(x+y)方
(x+y)^2-4(x^2-y^2)+4(x-y)^2
=(x+y)^2-2*2(x+y)(x-y)+4(x-y)^2
=[(x+y)-2(x-y)]^2
=(3y-x)^2