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Question

Question: (z – 1) (\(\bar{z}\)– 1) can be written as...

(z – 1) (zˉ\bar{z}– 1) can be written as

A

zzˉz\bar{z} + 1

B

| z |2 + 1

C

| z – 1 | 2

D

| z | 2 + 2

Answer

| z – 1 | 2

Explanation

Solution

Sol. (Z – 1) . (Zˉ\bar{Z} – 1) = (Z – 1) . (Z1\overline{Z - 1}) = | (Z – 1)|2

(Q ZZˉZ\bar{Z} = |Z|2)