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If the complex numbers z (1) , z (2) and...

If the complex numbers `z _(1) , z _(2) and z _(3)` denote the vertices of an isosceles triangle, right angled at `z _(1),` then `(z _(1) - z _(2)) ^(2) + (z _(1) - z _(3)) ^(2)` is equal to A)0 B)`(z _(2) + z _(3)) ^(2)` C)2 D)3

A

`alpha, beta, gamma`

B

`beta, alpha, gamma`

C

`gamma, alpha, beta`

D

`beta, gamma, alpha`

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The correct Answer is:
B
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