实数x,y满足2x+5y>=0,2x-3y>=-6,2x+y

若实数x,y满足{2x-y>=0, 设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y 已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x. 实数x,y满足x^2+y^2-6x+5=0,且x+2y+m 若实数x,y满足不等式组x>=0 ,y>=0,x+2y 若实数x,y满足约束条件x-y-2=0,2y-3 已知实数x,y满足不等式组：2x-y=0,x+2y 设实数x、y满足方程2x²+3y²=6y,求x+y的最大值 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 若实数x,y满足x的平方+y的平方-4x-2y+5=0,则（x+y）/2x-3= 已知实数x,y满足x=√(9-x+2y)+√(3x-6y-27)+5,则-2x-y的立方根为 设Z=x+y,其中实数x,y满足不等式x+2y>=0,x-y