Let |(barZ(1) - 2barz(2))//(2-z(1)barz(2...

Let `|(barZ_(1) - 2barz_(2))//(2-z_(1)barz_(2))|= 1` and `|z_(2)| ne 1`, where `z_(1)` and `z_(2)` are complex numbers. shown that `|z_(1)| = 2`

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