A) 1
B) 0
C) 2
D) 4
Correct Answer: D
Solution :
If \[\omega \] is a complex cube root of unity then \[{{\omega }^{3}}=1\] and \[1+\omega +{{\omega }^{2}}=0\], therefore \[(1+\omega -{{\omega }^{2}})(1-\omega +{{\omega }^{2}})\] \[=(-2{{\omega }^{2}})(-2\omega )=4\]You need to login to perform this action.
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