6(x-y)³+15(y-x)²-9(y-x)³因式分解
问题描述:
6(x-y)³+15(y-x)²-9(y-x)³因式分解
答
=6(x-y)³-15(x-y)²+9(x-y)³
=15(x-y)³-15(x-y)²
=15(x-y)²(x-y-1)