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Question Number 185401 by Mastermind last updated on 21/Jan/23

Show that \frac{1 + z}{1 - z} + \frac{1 + \bar{z}}{1 - \bar{z}} = \frac{2 (1 - ∣ z ∣^{2})}{∣ 1 - z ∣^{2}}

Where z is a complex number

Help!

Commented by Frix last updated on 21/Jan/23

This is just a writing exercise . Simply let

z = a + b i and follow the rules of complex

numbers .

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