x3次方-xy平方+x平方y-y3次方=x(x²-y²)+y(x²-y²)=(x+y)(x²-y²)=(x+y)(x+y)(x-y)=(x+y)²(x-y)很高兴为您解答,【the1900】团队为您答题.请点击下面的【选为满意回答】按钮,...