已知实数x,y满足x^2+y^2-6x-8y+21=0,若4x+3y+c

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^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x²+y²-2x+6y+10=0,求y∧-x. 已知实数x y满足x^2+y^2-6x-8y+21=0,求y/x的取值范围,和x^2+Y^2+2x+4y的最值 若实数x,y满足{2x-y>=0, 已知实数x,y满足x^2+3y^2+6x-12y+21=0,求x,y的值 已知实数x、y满足x²+y²+4x-6y+13=0 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xy满足x^2+y^2-6x+4y+13=0求x^y的值 已知实数,y满足x^2+y^2+4x+3=0,求y-2/x-1的值域 已知实数X,Y满足4X+3Y-10=0,求x^2+y^2的最小值