3个式子吧?3（x-1)³y-（1-x）³z=3（x-1)³y+（x-1）³z=(x-1)³(3y+z)(2)m(x-y)²-x+y=m(x-y)²-(x-y)=(x-y)[m(x-y)-1]=(x-y)(mx-my-1)(3)x²(x+y)(y-x)-xy(x+y)(x-y) =x²(x...