计算:(x^2-y^2/xy)^2/(x+y)^2*(x/x-y)^3
(x^2+xy/x-y)/(xy/x-y)计算
计算:(x+y/x-y)÷(xy+x^2)
x-y/xy-y^2计算
计算:(x^2-y^2/xy)^2/(x+y)^2*(x/x-y)^3
计算3x[xy-2x(1/y-x/3]+3y(x²-y²)
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)
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
计算:[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
计算[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]3x^2y计算,
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y