化简(2x/(x+y)-4x/(y-x))/8x(x^2-y^2)得
1、x(x-y)(x+y)-x(x+y)^2
化简:(2x-y)²-4(x-y)(x+y)
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
x^2-y^2/x+y-4x(x-y)+y^2/2x-y,
(1)(x^2/x)-y-x-y
【(x-y)^2+(x+y)(x-y)】除以 2x
x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2
(2x-y)^2-4(x-y)(x+2y)
(2x-y)²-4(x-y)(x+2y)
化简:{(x+2y)(2y-x)-4y(-x+y) } / (-2x)
化简:[(2x-y)平方+(2x+y)(2x-y)-4x(x-y+1)]÷2x
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)