已知实数x,y,z满足x-y=8,xy+z2=-16,则x+y+z=______.
已知实数x,y,z满足x-y=8,xy+z2=-16,则x+y+z=______.
已知实数z、y、z满足x+y=5及z2=xy+y-9,则x+2y+3z=______.
已知实数x,y,z满足x=6-y,z2=xy-9,求证:x=y.
已知有理数x、y、z满足x-y=8,xy+z2= -16 求证:x+y+z=0
已知有理数x、y、z满足x-y=8,xy+z2= -16怎么解
已知实数x,y,z满足x/(y+z)+y/(z+x)+z/(x+y)=1,求x2/(y+z)+y2/(z+x)+z2/(
已知实数x、y、z满足x+y=4及xy=z2+4,求x+2y+3z的值.
设实数x,y,z满足x2+y2+z2-xy-yz-zx=27,则|y-z|的最大值为?
已知实数x,y,z适合x+y=6,z2=xy-9,则z=( )
实数x,y,z满足x2+y2+z2-xy-yz-zx=27,则|y-x|的最大值
已知x,y,z满足x/(y+z)+y/(z+x)+z/(x+y)=1,求代数式x2/(y+z)+y2/(x+z)+z2/
已知实数x,y,z,满足那么x+y=6,z^2=xy-9,求(x+y)^z