[" A If "n" is a positive integer but no...

[" A If "n" is a positive integer but not a multiple of "3" and "z=-1+i sqrt(3)" ,then "(z^(2n)+2^(n)z^(n)+2^(2n))" is equal to "],[[" (A) "0," (B) "-1," (C) "1," (D) "3times2^(n)]]

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