Question

If ∣z∣=1,(z≠−1)&z=x+iy then (z−1z+1) is

Answer 1

Answer
∣z∣=1,(z≠−1)
&
z=x+iy
(z−1z+1) = ?
              = 1
because Z=1Z
 so both gets canceled and the answer will be 1.