因式分解x三次方(x-2y)+y三次方(2x-y)
问题描述:
因式分解x三次方(x-2y)+y三次方(2x-y)
答
x三次方(x-2y)+y三次方(2x-y)
=x³(x-2y)-y³(x-2y)
=(x-2y)(x³-y³)
=(x-2y)(x-y)(x²+xy+y²)