√xy/x+√xy/y怎么算
√xy/x+√xy/y怎么算
(√xy -xy分之x+√xy)除以√xy -y分之x-y(x>0,y.0)
x y xy=10怎么算
√xy+y分之一+√xy+x分之一等于多少,
(x^2-xy)y÷y-x/xy怎么做?
(xy+1)(x+1)(y+1)+xy怎么因式分解
{x-y+(4xy/x-y)}{x+y-(4xy/x+y)}怎么解?
y分之x等于2分之1 xy怎么算
搜索[4(xy-1)二次方-(xy+2)(2-xy)]除以4分之1xy,其中X=-2,Y=5分之1.怎么算
解方程xy'=(√x^2-y^2)+y
(xy-x^2)乘以(xy)/(x-y)
计算:(xy-x²)×x-y/xy