x的2方(x-y)+2x(x-y)-(y-x)
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/【(x-y)/x】的负二次方
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
x/(x+y)(x-y)的三次方,y/(y+x)(y-x)的平方通分
计算1):(-x-y) (x+y)二次方 2)(y-x)(x-y)的三次方
1、x(x-y)(x+y)-x(x+y)^2
因式分解 x方(x-y)(y-x)
已知x方-4x+4+|y+x|=0,求2x+x方/x方y-x方÷x方+4x+4/y方-2y+1×(X+2)的值
(y-x)的二次方(x-y)+(x-y)的三次方+2(x-y)的二次方(y-x)
(x+2y-1)乘(x-2y+1)-(x-2y-1)的二次方
(x+2y)(x-y)-(x+y)的二次方等于多少
已知√x方-y +√2x+y=0,求x+y的值
因式分解(2x-y)四次方+(x+y)四次方+(2y-x)四次方