Question
Question: (z – 1) (\(\bar{z}\)– 1) can be written as...
(z – 1) (zˉ– 1) can be written as
A
zzˉ + 1
B
| z |2 + 1
C
| z – 1 | 2
D
| z | 2 + 2
Answer
| z – 1 | 2
Explanation
Solution
Sol. (Z – 1) . (Zˉ – 1) = (Z – 1) . (Z−1) = | (Z – 1)|2
(Q ZZˉ = |Z|2)