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If omega is a non-real cube root of u...

If `omega` is a non-real cube root of unity and `n` is not a multiple of 3, then `=|1omega^nomega^(2n)omega^(2n)1omega^nomega^nomega^(2n)1|` is equal to (a) 0 (b) `omega` (c) `omega^2` (d) 1

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