通分(x-y)÷(2x+2y)与xy÷(x+y)² 2mn÷4m²-9与(2m-3)(2m+3)

2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分 分式的通分：2xy/(x+y)^2与x/(x^2+y^2)分式通分, 通分x-y/2x+2y与xy/(x+y）的2次方 通分x-y/2x+2y与xy/(x+y)2 通分 2X+2Y分之X-Y与(X+Y)²分之XY 通分 x-y/2x+2y 与 xy/(x+y)² 的 (x-y)/(2x+2y)与(xy)/（x+y）²通分要过程 2x+2y/x-y与(x+y)²/xy 怎么通分 2x+2y/x-y与（x²+y²）/xy通分 一道数学通分题x-y/2x+2y与xy/(x+y)² 有谁知道数学通分X-Y/2X+2Y与XY/(X+Y)怎么做? 通分x-y/3x+3y与2xy/(x+y)^2 x/xy-y²与y/x²-xy 通分 2xy/(x+y)^2与x/x^2-y^2分式通分急急急急! 2xy/(x+y)^2与x/(x^2+y^2)分式通分 x/x^2-y^2与2y/x^2+xy 通分 一道数学通分题2xy/(x+y)²与x/x²-y² 2xy/(x+y)的平方与x/x的平方-y的平方.通分