Question
Question: If z = 2 + i, then (z – 1) (\(\bar{z}\) – 5) + (\(\bar{z}\) – 1) (z – 5)is equal to –...
If z = 2 + i, then (z – 1) (zˉ – 5) + (zˉ – 1) (z – 5)is equal to –
A
2
B
7
C
– 1
D
None of these
Answer
None of these
Explanation
Solution
Sol. (1 + i) (– 3 – i) + (1 – i) (– 3 + i) = (– 3 +1).2 = – 4