因式分解:(x-y)²-x+y=?求问号
问题描述:
因式分解:(x-y)²-x+y=?
求问号
答
(x-y)(x-y-1)
答
(x-y)²-x+y=(x-y)(x-y-1)
答
(x-y)²-x+y
=(x-y)²-(x-y)
=(x-y)(x-y-1)