Q. The number of complex numbers $z$ such that $|z-1|=|z+1|=|z-i|$, is
Complex Numbers and Quadratic Equations
Solution:
$|z-1|-|z+1|-|z-i|$
Point which is equidistant from $A, B$ and $C$ is $(0,0)$.
$\therefore z=0$ is only complex number which satisfies the given relation.