八上因式分解题,x²-xy-12y²=?m(x-y)²-x+y=?(都要有过程,)

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/17 17:35:17

八上因式分解题,
x²-xy-12y²=?m(x-y)²-x+y=?(都要有过程,)

x²-xy-12y²=(x-4y)(x+3y)
m(x-y)²-x+y
=m(x-y)²-(x-y)
=(x-y)[m(x-y)-1]
=(x-y)(mx-my-1)