Answer
$(0,3,0), (0,-3,0)$
Work Step by Step
Formula to calculate the distance is: $D^2=x^2+y^2+z^2$
Also, $F=D^2=x^2+y^2+z^2$
This implies, $F_x=2x+z, F_z=x+2z$
After solving for $x$ and $z$, we get
$x=0$ and $z=0$
Thus, $y^2=9+xz=9$ $implies y=\pm 3$
The required points are: $(0,3,0), (0,-3,0)$
