若实数x,y,z满足x+2y+3z=a( a为常数 ),则x2 + y2 + z2的取值范围是

已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 若实数XYZ满足2|x-y|+√2y+z+z方-z+1//4=0 求X+Y+Z 2y+z在根号里 已知实数xyz满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3求x+y+z的值 若实数x,y,z满足x+y+z=4[√(x-5)+√(y-4)+√(z-3)]求x,y,z的值 已知实数x,y,z满足x+y+z=2根号x-1+2根号y-1+2根号z-1求X+2Y+3Z 已知实数x,y,z满足关系式2x-3y-z=0,x-2y+z=0,求x比y比z的值 已知实数 x y z 满足x+y-z=0 ,3x-y+2z=0 则x :y :z 若实数x,y,z满足x+y+z=5,xy+yz+xz=3,求z的最大值 若实数X,Y,Z满足X+2Y+3Z=14,则X^2+Y^2+Z^2的最小值是多少? 若实数x,y,z满足x+y-z=1,试求x^2+3y^2+2z^2的最小值 若实数X.Y.Z满足Y+Z=3X^2-4X+6 Y-Z=X^2-4X+4确定XYZ大若实数X.Y.Z满足Y+Z=3X^2-4X+6 Y-Z=X^2-4X+4.试确定XYZ大小关系 若实数x,y,z满足x+2y+3z=a( a为常数 ),则x2 + y2 + z2的取值范围是 已知实数x,y,z,满足那么x+y=6,z^2=xy-9,求(x+y)^z 已知实数x,y,z满足x+y+z=1,x^2+y^2+z^2=1/2求X,Y,Z∈{0,2/3},已知实数x,y,z满足x+y+z=1,x^2+y^2+z^2=1/2求证X,Y,Z∈{0,2/3}, 已知,x,y,z是三个非负实数,满足3x+2y+z=5,z+y-z=2若s=2x+y-z,则s最大值与最小值的和是多少 若实数x,y,z满足（x-z）^2-4(x-y)(y-z)=0,则下列式子一定成立的是（ ）A.x+y+z=0 B.x+y-2z=0 C.y+z-2x=0 D.z+x-2y=0 若实数X、Y、Z满足（X-Z）的平方-4（X-Y)(Y-Z)=0,则下列成立的是：A:X+Y+Z=0 B:X+Y-2Z=0 C:Y+Z-2X=0D:Z+X-2Y=0