已知xy满足x>=1,x+y

已知xy满足x>=1,x+y= 已知xy满足x>=1,x+y 已知实数x、y满足xy>0,且8/xy+1/x+1/y=1, 已知正数x、y满足xy-x-y=1,求x+y的最小值 已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy 已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y 已知xy满足约束条件y=2 2X+y 已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y 已知正数xy满足x+3y=1,则1/x+1/y最小值是 已知正数xy满足x+2y=2,求1/x+1/y的最小值 已知实数xy满足 4x+y-9>=0 x-y-1 已知正数x,y满足x+2y=1,则xy的最大值为 已知正数x,y满足x+2y=1,xy最小值为 已知xy满足关系式(-x+6):(x-y)；（4x+y)=3；14：1,求x+y的值 已知x.y满足X2-y2=2xy.则x-y/x+y=?x. 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x,y满足x^2+y^2=1 求(1-xy)(1+xy)的最大值和最小值