已知实数x,y,z满足:x+y-6=0,z²+9=xy,则x²+1/3y²=?
已知实数x,y,z满足:x+y-6=0,z²+9=xy,则x²+1/3y²=?
已知实数x,y,z满足x²-6xy+10y²+4y+|z²-3z+2|+4=0,求(x+y
已知实数x,y,z,满足x+y=5,z²=xy+y=9,求x+2y+3Z的值
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=5及z的2次方=xy+y-9则x+2y+3z=?
已知实数x、y满足x+y=1,则函数z=3x²+3y²+4xy+7的最小值是?最大值是?
已知实数x,y满足x+y=1,则函数z=3x²+3y²+4xy+7的最小值是?最大值是?
已知实数x、y、z满足:2x+3y+z=1,则x²+y²+z²的最小值为
已知x y z 满足x+y=5,z²=xy+y-9,求x+2y+3z的值
已知实数z、y、z满足x+y=5及z2=xy+y-9,则x+2y+3z=______.
x,y,z属于正实数,则x+3y-z=0,则z²/xy的最小值是
已知实数X,Y,Z满足 X²-6XY+10Y²+4Y+∣Z²-3Z+2∣+4=0,求(X+