﹣﹙﹣xy﹚^2(x^2－xy－y^2)＋﹙x^2y)^2 计算题啊 ﹣﹙﹣xy﹚^2(x^2－xy－y^2)＋﹙x^2y)^2

来源：学生作业学帮网编辑：学帮网时间：2024/05/19 09:59:01

﹣﹙﹣xy﹚^2(x^2－xy－y^2)＋﹙x^2y)^2 计算题啊
﹣﹙﹣xy﹚^2(x^2－xy－y^2)＋﹙x^2y)^2

﹣﹙﹣xy﹚^2(x^2－xy－y^2)＋﹙x^2y)^2
=-x²y²(x²-xy-y²)+x^4y²
=-x^4y²+x³y³+x²y^4+x^4y²
=x³y³+x²y^4