问题 填空题

分解因式:x3-xy2-x+y=______.

答案

x3-xy2-x+y,

=x(x2-y2)-(x-y),

=x(x-y)(x+y)-(x-y),

=(x-y)(x2+xy-1).

故答案为:(x-y)(x2+xy-1).

单项选择题
单项选择题