已知实数x,y满足y=-x^2,若0

若实数x,y满足{2x-y>=0, 已知实数x,y满足不等式组：2x-y=0,x+2y 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x2+y2+2x=0则x+y得最小值 若实数x,y满足不等式组x>=0 ,y>=0,x+2y 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 2x+y-2>=0,x-2y+k>=0,x-1 已知实数x,y满足不等式2x-y>=0,x+y-4>=0,x 已知实数x满足x^2+2xy+y^2-(x+y)-6=0则x+y的值 已知实数x、y满足x²+y²+4x-6y+13=0