作业帮已知xy^2=-2xy(x^2y^5-xy^3-y)
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 06:26:27
已知xy^2=-2xy(x^2y^5-xy^3-y)
已知xy^2=-2xy(x^2y^5-xy^3-y)
已知xy^2=-2xy(x^2y^5-xy^3-y)
xy(x^2y^5-xy^3-y)
=xy^2 (x^2y^4-xy^2-1)
=(xy^2) [(xy^2)^2-(xy^2)-1]
=-2×[(-2)²-(-2)-1]
=-10
收录互联网各类作业题目，免费共享学生作业习题
学做题作业网手机作业共收录了 千万级 学生作业题目
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 06:26:27
已知xy^2=-2xy(x^2y^5-xy^3-y)
已知xy^2=-2xy(x^2y^5-xy^3-y)
已知xy^2=-2xy(x^2y^5-xy^3-y)
xy(x^2y^5-xy^3-y)
=xy^2 (x^2y^4-xy^2-1)
=(xy^2) [(xy^2)^2-(xy^2)-1]
=-2×[(-2)²-(-2)-1]
=-10