If x = √3/2 + i/2(i = √-1), then (1 + iz + z5 + iz8)9 is equal to -

Question

If x = \({√3\over2}+{i\over2} , where (I=\sqrt{-1})\)  , then (1+iz+z^{​​​​​​5}​​​​​+iz⁸)⁹     is equal to

A)-1

B)1

C)0

D)(-1+2i)

Answer 1

The correct answer is A) -1

Detailed solution::