Question

初二数学分解因式

x²（x-y)+(y-x)

Answer 1

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

Answer 2

原式=x²(x-y)-(x-y)
=(x-y)(x²-1)
=(x-y)(x-1)(x+1)