已知实数X,Y满足X+Y>=2,X-Y
已知实数x,y满足不等式组:2x-y=0,x+2y
已知正实数x,y满足x+2y=4,则1x+1y
已知实数X,Y满足X+Y>=2,X-Y
已知实数x,y满足下面关系式:y=x
已知实数X,Y满足2
已知实数xy满足x+2y
已知实数x,y满足(x+y)^2=1,(x-y)^2=25,求x,y的值
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x²+y²-2x+6y+10=0,求y∧-x.
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知实数x,y满足|x|+x+y=10、x+|y|-y=12,则x+y的值?
已知实数x,y 满足x2+y2+2x=0则x+y得最小值