计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2
答案:2 悬赏:10 手机版
解决时间 2021-02-12 18:17
- 提问者网友：泪痣哥哥
- 2021-02-12 09:06
计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2
最佳答案
- 五星知识达人网友：天凉才是好个秋
- 2021-02-12 10:28
4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2=(4xy-x²-2xy-y²)/[xy(x+y)(x-y)]÷[(x-y)(x+2y)]/[xy(x+2y)]=-(x-y)²/[xy(x+y)(x-y)]÷(x-y)/xy=-1/(x+y)
全部回答
- 1楼网友：老鼠爱大米
- 2021-02-12 12:04
对的，就是这个意思
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