x^2+y^2-2x-2y+2xy+1= 因式分解

分类: 作业答案 • 2021-12-20 08:43:18

问题描述：

答

x^2+y^2-2x-2y+2xy+1
=x^2+2xy+y^2-2x-2y+1
=(x+y)^2-2(x+y)+1
=(x+y-1)^2

答

（x+y-1）^2

答

=x^2+2xy+y^2-2x-2y+1
=(x+y)²-2(x+y)+1
=(x+y-1)²