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

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

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)