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If alpha is a non-real root of x^(7) = ...

If `alpha` is a non-real root of `x^(7) = 1` then `alpha (1 + alpha)(1 + alpha^(2) + alpha^(4))=`

A

1

B

2

C

`-1`

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
C
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