时数x,y,z满足x+y+z=5,xy+yz+zx=3,求Z最大值
时数x,y,z满足x+y+z=5,xy+yz+zx=3,求Z最大值
实数a.b.c满足x+y+z=5,xy+yz+zx=3,求z的最大值
已知实数xyz满足x+y+z=5,xy+yz+zx=3,求z的最大值
已知三个数x,y,z,满足xy/x+y=-2,yz/y+z=4/3,zx/z+x=-4/3,求(xyz)/(xy+yz+
已知:实数x,y,z满足:x+y+z=0,xy+yz+zx=-3,求z的最大值.
若实数x,y,z满足x+y+z=5,xy+yz+xz=3,求z的最大值
实数x、y、z满足x+y+z=5,xy+yz+zx=3,则z的最大值是( )
已知实数x,y,z满足x+y+z=5,xy+yz+zx=3,则z的最大值是( )
1.实数x y z满足x+y+z=5,xy+ yz+ zx+=3,则z的最大值是________
实数x、y、z满足x+y+z=5,xy+yz+zx=3,则z的最大值是 ___ .
已知三个数x,y,z满足xy/x+y=-2,yz/y+z=4/3,zx/z+x=-4/3,求xyz/xy+yz+zx的值
已知三个数x,y,z,满足xy/x+y=-2,yz/y+z=4/3,zx/z+x=-4/3,求xyz/xy+yz+zx的