计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2

来源：学生作业帮编辑：灵鹊做题网作业帮分类：数学作业时间：2024/04/20 02:31:38

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)

（x^2+xy/x-y)/（xy/x-y)计算（xy-x^2)乘以(xy)/(x-y) 计算（xy-y^2)÷x-y/xy 计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2 x-y/xy-y^2计算 (x^2-xy)y÷y-x/xy怎么做? 计算：(x+y/x-y)÷(xy+x^2) 计算3xy[2xy-x(y-2)+x-1] 计算：3xy[2xy-x（y-2）+x] 计算：x²+2xy+y²/xy-y².x²-2xy+y²/xy+y&# x-y/x²÷x²-2xy+y²/xy*（xy-x²） (x+y-2xy)(x+y-2)+(1-xy)²