学帮网(y-x)²(x-y)+(x-y)的三次方+2(x-y)²(y-x)
来源：学生作业学帮网 编辑：学帮网 时间：2024/05/14 11:45:02
(y-x)²(x-y)+(x-y)的三次方+2(x-y)²(y-x)
解
(y-x)²(x-y)+(x-y)³+2(x-y)²(y-x)
=(x-y)²(x-y)+(x-y)³-2(x-y)²(x-y)
=(x-y)³+(x-y)³-2(x-y)³
=2(x-y)³-2(x-y)³
=0
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来源：学生作业学帮网 编辑：学帮网 时间：2024/05/14 11:45:02
(y-x)²(x-y)+(x-y)的三次方+2(x-y)²(y-x)
解
(y-x)²(x-y)+(x-y)³+2(x-y)²(y-x)
=(x-y)²(x-y)+(x-y)³-2(x-y)²(x-y)
=(x-y)³+(x-y)³-2(x-y)³
=2(x-y)³-2(x-y)³
=0