化简:(x+y)+(2x+11×2y
化简:(x+y)+(2x+11×2y
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
化简:(2x-y)²-4(x-y)(x+y)
(x-y/x+2y)³
化简(-y-2/x)÷(x+2/y)的结果 【备用选项 A.-y/x B.-x/y C.x/y D.y/x 】 好了再加
1、x(x-y)(x+y)-x(x+y)^2
化简(y-x)(z-x)/(x-2y+z)(x+y-2z)+(z-y)(x-y)/(x-2z+y)(y+z-2x)+(x
化简:2(3x-y)-3(x+7y)
-(5x+y)-3(2x-3y)(化简)
化简(x-y)^3乘以(y-x)^2为
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y