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If z^4+1=sqrt(3)i (A) z^3 is purely re...

If `z^4+1=sqrt(3)i` (A) `z^3` is purely real (B) z represents the vertices of a square of side `2^(1/4)` (C) `z^9` is purely imaginary (D) z represents the vertices of a square of side `2^(3/4)`

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