若实数X,Y满足X^2+3Y^2-12Y+12=0,则Y的值是?

若实数X,Y满足X^2+3Y^2-12Y+12=0,则Y的值是? 若实数x,y满足x^2+3y^2-12y+12=0,则y^x的值是? 若实数x,y满足x^2+y^2-6x-4y+12=0,则x^2+y^2的取值范围是 若实数xy满足（x+y+2)(x+y-1)=0,则x+y的值是 若x,y为实数且满足 x^+3y^-12y+12=0 ,求y^x的值? 已知实数x,y满足条件x≥0,y≥x,3x+4y≤12,则(x+2y+3)/(x +1)的最大值是 实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则（Y-4）/（X-2）的取值范围是? 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4x+3y-12=0,则a=x^2+y^2的取值范围是 若实数xy满足y≤2x+3,且y=x^2,则y/（x-12）的取值范围是 若实数X Y满足y=2x+1,且x小于等于2y大于等于3,则y/x的取值范围是 ? 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