计算：5x/x-y+ 5y/y-x

计算：5x/x-y+ 5y/y-x 计算(x+y)(x-y)(x+y)3次方(x-y)5次方计算(x+y)×(x-y)×(x+y)3次方×(x-y)5次方 计算[(x+2y)²-(x+y)(x-y)-5y²]÷(2x) 计算：x(x-3y)(5x-2y) 计算 x(x-3y)(x-5y) 计算：(x-5y)^2 计算(-x-y)(y-x)+(-x-y)(x+y), 计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2) 行列式计算 x y x+y y x+y x x+y x y|x y x+y ||y x+y x ||x+y x y | 计算 (x²/x+y)-x-y 计算(5x-2y)·(2y-5x) 计算：4x+2y-5x-y 计算-(x-5y)-(-3x+2y) 计算：5x-2y-6+ (1/x) + (1/y) 计算 （x-2y)^6÷（2y-x)^5 计算:y-x分之x+y+x-y分之y-y-x分之2x-y 2（x+3y)(x-2y)-3(2x+y)(2x-3y)+5(x-2y)(x+2y)计算, （x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y