5(x+y)²-3(x+y)³+(y+x)²-8(y+x)³ 怎么样求解这样的多项式?

来源：学生作业学帮网编辑：学帮网时间：2024/06/08 10:05:51

5(x+y)²-3(x+y)³+(y+x)²-8(y+x)³
=5(x+y)²-3(x+y)³+(x+y)²-8(x+y)³
=6(x+y)²-11(x+y)³