Class 11Mathematics1 Complex Numbers and Quadratic Equations: Complex NumbersDe Moivre's theorem and Roots of unity
MediumIf $\omega$ is an imaginary cube root of unity,$(1 + \omega - \omega^2)^7$ equals
- A$128\omega$
- B$-128\omega$
- C$128\omega^2$
- D$-128\omega^2$
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