实数x,y,z满足x=6-3y,x+3y-2xy+2z²=0,则x的2y+z的次方的值为

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 已知实数x,y,z满足:3x-y-3z=0和x-6y+6z=0(z≠0),则代数式x+y+z/x-y+z的值等于 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 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=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 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 已知实数x .y.z.满足2^x=3^y=6^z 求证:xy+yz=xz 已知实数x,y,z满足x+3y=6,2xy-z^2=6,求x、y、z的值 xyz都是实数,满足x+2y-z=6,x-y+2z=3求x*2+y*2+z*2的最小值 已知实数x,y,z,满足那么x+y=6,z^2=xy-9,求(x+y)^z 设实数X,Y,Z满足Y+Z=6—4X+3X^ , Z—Y=4-4X+X^ 试确定X,Y,Z间的大小关系 高二今天刚刚开学的数学不等式问题设实数x y z 满足y+z=6-4x+3x^2 z-y=4-4x+x^2 确定x y z的大小关系 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}, 正实数x,y,z 满足x+y+z=1 证明正实数x,y,z 满足x+y+z=1 证明2x+y≤1 2y+x≤1 2z+x≤1题目错了，是正实数x,y,z 满足x+y+z=1 证明1/(2x+y)+1/(2y+x)+1/(2z+y)-3≥0 设实数X.Y.Z,满足Y+Z=6-4X+3X^2,X-Y=4-4X+X^2,求X.Y.Z的大小关系