(X+Y)(X-Y)+(X-Y)^2-(6X^2y-2XY^2)除以2Y
【(x-y)^2+(x+y)(x-y)】除以 2x
因式分解:x×x-xy-2y×y-x-y
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
{(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y
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(x^2y^2-xy)-y(x^2-x^3y)]除以3x^2y
(x^2+xy/x-y)/(xy/x-y)计算
作乘法:(x+y)(x^2-xy+y^2);(x-y)(x^2+xy+y^2)
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y