化简:(x²+y²/x-y)-(2xy/x-y)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
化简:(x²+y²/x-y)-(2xy/x-y)
化简(y根号x+x根号y)/(xy-y²)-(x+根号xy+y)/(x根号x-y根号y).
化简:[(x×根号x+x×根号y)/(xy-y²)]-[(x+根号下xy+y)/(x×根号x-y×根号y)]
化简(X²+2XY+Y²)(X²—XY+Y²)²
化简(3X²-XY+Y²)-5(X²-XY+2Y²)
分式计算:(x²+2xy+y²)/(x²y+xy)*y/(x+y)
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
2x+2y/x-y与(x²+y²)/xy通分
(x-y)/(2x+2y)与(xy)/(x+y)²通分要过程
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
(x+y)(x²-xy+y²)—xy(x+y)因式分解