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Question Number 31031 by abdo imad last updated on 02/Mar/18

1) s o l v e i n s i d e C z^{12} = 1 a n d g i v e t h e s o l u t i o n a t f o r m

r e^{i θ}

2) c a l c u l a t e 1 + u + u^{2} + \dots + u^{n} t h e n f i n d t h e s o l u t i o n

o f z \in C z^{8} + z^{4} + 1 = 0