若两个正实数x,y满足x^2+2xy-3y^2=0,求x^2+xy+y^2/x^2-xy+y^2
若两个正实数x,y满足x^2+2xy-3y^2=0,求x^2+xy+y^2/x^2-xy+y^2
若正实数x,y满足2x+y+6=xy,求xy的最小值.
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
若正实数x.y满足x+y=xy,则x+2y的最小值
若两个正实数x,y满足x方+2xy-3y方=0,求x方+xy+y方除以x方-xy+y方的值
若正实数x ,y满足2x+y+6=xy.则xy的最小值.
已知正实数xy满足x+y=1,求1/(2x+y) +4/(2x+3y)最小值
已知实数xy满足x+2y
已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy
若正实数X,Y满足2X加Y加6等于XY,求XY的最小值
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
已知实数x、y满足2x2-7xy+3y2=0,求x:y