If \(\omega\) is a complex cube root of unity, then \((1+\omega-\omega^2)^3=\)
A. 4
B. 0
C. 8
D. −8
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Answer: D. −8
\(1+\omega=-\omega^2\Rightarrow(-2\omega^2)^3=-8\omega^6=-8\).
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· 23 Oct 2026
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