计算x²·(x-y)+(y-x)还有一个：－4x²yz－12xy²z＋4xyz

计算x²·(x-y)+(y-x)还有一个：－4x²yz－12xy²z＋4xyz
计算x²·(x-y)+(y-x)
还有一个：－4x²yz－12xy²z＋4xyz

计算x²·(x-y)+(y-x)还有一个：－4x²yz－12xy²z＋4xyz
原式=x²(x-y)-(x-y)
=(x-y)(x²-1)
=(x-y)(x+1)(x-1)

解x²·(x-y)+(y-x)
=x²(x-y)-(x-y)
=(x-y)(x²-1)
=(x-y)(x+1)(x-1)


－4x²yz－12xy²z＋4xyz
=-xyz（x+3y-1）