defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Complex Numbers Algebraic Operations on Complex Numbers
If \(z = \frac{1 \ + \ 2i}{2 \ - \ i} - \frac{2 \ - \ i}{1 \ + \ 2i}\), then what is the value of z2 + z ̅z? (i = √-1)
1
0
2
-1
3
1
4
8