[x^2-y^2)除以(x+y)]^2除以(x-y)
【(x-y)^2+(x+y)(x-y)】除以 2x
{(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y
已知2x-y除以x+y等于2,求代数式(4x-2y除以x+y)-(4x+4y除以2x-y)的值
(x^2-y^2)2除以(x+y)^2再除以(x-y)等于多少
[(x+2y)的平方-(x+y)(x-y)-5y的平方]除以(2x)
分式的加减:[(x/y-y/x)除以(x+y)+x(1/y-1/x)]除以1+x/y,其中x=5,y=2
已知x-y除以x+2y等于三分之一,求x-2y除以x+y的值
化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)
[(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x=
y^2-x^2\5x^2-4yx除以x+y\5x-4y
[(x+y)平方-y(2x+y)-8x]除以2x
函数y=2x+3除以(x-1)(x