Finding the number of complex numbers satisfying $|z|=\text{max}\{|z-1|,|z+1|\}$ 
Find the number of complex numbers satisfying $|z|=\text{max}\{|z-1|,|z+1|\}$

My Attempt: Let $z=x+iy$, so, $$\sqrt{x^2+y^2}=\text{max}\{\sqrt{(x-1)^2+y^2},\sqrt{(x+1)^2+y^2}\}$$
Case I: $\sqrt{x^2+y^2}=\sqrt{(x-1)^2+y^2}\implies \pm x=x-1\implies x=\frac12$
Case II: $\sqrt{x^2+y^2}=\sqrt{(x+1)^2+y^2}\implies \pm x=x+1\implies x=-\frac12$
Does that mean if the complex numbers are lying on two lines, either $x=\frac12$ or $x=-\frac12$ then they would satisfy the required equation?
Therefore, the required number of complex numbers is infinite?
But the answer given is zero.
Can we solve this graphically?

It follows from
$$
 |z-1|^2 = (x-1)^2 + y^2 = x^2 + y^2 - 2x + 1 \\
 |z+1|^2 = (x-1)^2 + y^2 = x^2 + y^2 + 2x + 1 
$$
that
$$
 \max(|z-1|, |z+1|)^2 = x^2 + y^2 + 2|x| + 1 > x^2 + y^2 = |z|^2
$$
which shows that the equation has no solution.
Geometrically:
$$
 \max(|z-1|, |z+1|) = |z+1|
$$
means that the distance from $z$ to $1$ is less than or equal to the distance from $z$ to $-1$, that are exactly the points in the closed right half-plane. But points in the right half-plane are closer to the origin than to the point $-1$, so that
$$
\max(|z-1|, |z+1|) = |z+1| > |z|
$$
In the same way you can show that the equation has no solution in the (closed) left half-plane.
With respect to your approach: It is correct that $|z| = |z-1|$ if and only if $x=1/2$ (case I). But for those $z$ is
$$
 |z-1| < |z+1|
$$
so that does not give any solution. Similar in case II.
