已知实数x,y满足2x+5y>=10;2x-3y>-6;2x+y

已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x. 已知x,y满足约束条件{2x+5y>=10,2x-3y>=-6,2x+y 已知实数x,y满足x=√(9-x+2y)+√(3x-6y-27)+5,则-2x-y的立方根为 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满足根号2x-y的值+5x-6=y-根号y-2x,求x,y的值 已知实数x,y满足x^2+y^2-6x-8y+24=0,则3x+4y-10的取值范围是 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x,y为实数,切满足y=根号(3x-6)+根号(10-5x)+3试求2x-y的值 已知x，y，z为实数，满足x+2y-z=6x-y+2z=3 已知实数X.Y满足(X-3)^2+(Y-3)^2=6,求X+Y的最大值和最小值