作业帮 > 数学 > 作业

因式分解:(x+y-2xy)(x+y-2)+(1-xy)2=______.

来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/06/16 01:17:40
因式分解:(x+y-2xy)(x+y-2)+(1-xy)2=______.
因式分解:(x+y-2xy)(x+y-2)+(1-xy)2=______.
(x+y-2xy)(x+y-2)+(1-xy)2
=(x+y)2-2(1+xy)(x+y)+4xy+1-2xy+x2y2
=(x+y)2-2(1+xy)(x+y)+(1+xy)2
=(x+y)2-(1+xy)(x+y)-(1+xy)(x+y)+(1+xy)2
=(x+y)(x+y-1-xy)-(1+xy)(x+y-1-xy)
=(x+y-1-xy)(x+y-1-xy)
=(x+y-1-xy)2
故答案为:(x+y-1-xy)2