已知x、y满足根号下4x-5y+根号下x-y-1=0,则根号下xy-根号下x/y
已知x、y满足根号下4x-5y+根号下x-y-1=0,则根号下xy-根号下x/y
已知根号下4x-5y与根号下x-y-1互为相反数,则根号下xy-根号下x/y的值为
(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.
已知正实数x y满足x-根号xy-2y=0求 x+3根号xy+2y/2x-2根号下xy-y
已知xy都是实数,且y=根号下x-5+根号下5-x+1
已知y=根号下(x-4)+根号下(4-x)+3,求代数式(x-y+4xy/x-y)(x+y-4xy/x+y)?
已知x+y=5 xy=3 求根号下y/x+根号下x/y
已知x+y=5,xy=3,求根号下x/y+根号下y/x的值
x y a满足根号下x+y-8+根号下8-x-y=根号下3x-y-a+根号下x-2y+a+3
y满足x^2+y^2-4x-2y+5=0求根号下8y-2x分之根号下x+y(不包括+y)
若x,y满足根号下4x-5y+根号下x-y-1 等于零,求根号下xy-根号下x╱y的值?
已知实数x、y满足y=根号下x-3+(根号下3-x)加12,求根号下xy的值