跟号打不出来,所以用汉字,大家费点劲哈 ((根号x/根号x+根号y)-(根号y/根号y-根号x)-(2根号xy/x-y)
跟号打不出来,所以用汉字,大家费点劲哈 ((根号x/根号x+根号y)-(根号y/根号y-根号x)-(2根号xy/x-y)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
①{(x+y)/(根号x+根号y)}+{2xy/根号xy(根号x+根号y)}
已知x,y为正数,且根号x(根号x+根号y)=3根号y(根号x+5根号y),求:(2x+根号xy+3y)/(x+根号xy
化简(y根号x+x根号y)/(xy-y²)-(x+根号xy+y)/(x根号x-y根号y).
化简:((根号x-根号y)^3+2x根号x+y根号y)/(x根号x+y根号y)+(3根号xy-3y)/(x-y)
化简:[(x×根号x+x×根号y)/(xy-y²)]-[(x+根号下xy+y)/(x×根号x-y×根号y)]
根号X(根号X-根号Y)=3根号Y(5根号Y-根号X),求(2X-根号XY+3Y)/X+根号XY-6Y
``(x-2倍根号xy+y)(根号x +根号y)
(x+2根号xy+y)÷(根号x+根号y)
已知x平方+y平方-2y+1=0,求(根号x+根号y+3)/((根号xy+y)(3根号x+根号y))
计算 (xy-y2分之x根号x+x根号y)-(x根号x-y根号y分之x+根号xy+y)