Answer:
all but the second statement are correct
Step-by-step explanation:
The n roots of unity are evenly spaced around a circle of radius 1 in the complex plane. One of the roots is always 1. If n is even, -1 will also be a root.
c
Answer:5×4×9/9 +(9(4))
=180/9 + (36)
= 20+36
=56
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