x-y/2x+2y与xy/(x+y)²;最简公分母是什么?怎样通分?

2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分 2xy/(x+y)^与x/x^-y^ (-x-y)(x^2+xy+y^2) 化简x^-y^/x^-2xy+y^ 2*(x-y)²(y-x)(xy) X-Y/2X+2Y XY/X+Y² 因式分解：x×x-xy-2y×y-x-y （x^2+xy/x-y)/（xy/x-y)计算 x³-xy²/x³+2x²y+xy² 与x²-y²/x(x+3y)+y(y-x) 急、、、、 (x+y)/x /(x-(2xy-y^2)/x) 因式分解 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) (x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy] x根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）y 设x,y∈R,比较(x*2+y*2)*2与xy(x+y)*2 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