计算:(x|x^2-xy)^﹣3×(﹣x^2-2xy+y^2)﹣2÷(x^2|xy-y^2)^2=
(x^2+xy/x-y)/(xy/x-y)计算
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
(xy-x^2)乘以(xy)/(x-y)
计算(xy-y^2)÷x-y/xy
计算:(x+y/x-y)÷(xy+x^2)
2x²y+{2xy-[x²y-2(﹣3x²y+xy)]﹣4xy²} 计算
x-y/xy-y^2计算
(x^2-xy)y÷y-x/xy怎么做?
计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)