设x>0,y>0,求证:1/2(x +y)2 +1/4(x +y)≥根号下xy(根号下x+根号下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
(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.
(x*根号下x + x*根号下y ) / (xy-y^2) — (x + 根号下xy + y) /(x*根号下x — y
[x-y]根号下 1/y-x +根号下 x的平方-2xy+y的平方 化简
若X>0,y>0,且x-根号下xy-2y=0,求(2x-根号下xy)/y+2根号下xy的值
若x>0,y>0,且x-根号下xy-2y=0,求【2x-根号下xy】÷【y+2根号下xy】的值
x,y,z属于R+,求证根号下(x^2+y^2-xy)+根号下(y^2+z^2-yz)大于根号下(x^2+y^2-xz)
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
计算:(2/3x根号下9x+6x根号下y/x)+(y根号下x/y-x的平方根号下1/x)=
根号下x-2y+5+根号下2x+y-1 等于0,求x,y的值
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
若x>0,y>0,且根号下x(根号下x+根号下y)=3根号下y(根号下x+5根号下y),求(2x+2根号下