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# Complex #'s Prac.

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Let $$\omega$$ be a nonreal root of $$z^3=1.$$ Let $$a_1, a_2,\dots,a_n$$ be real numbers such that $$\frac{1}{a_1 + \omega} + \frac{1}{a_2 + \omega} + \dots + \frac{1}{a_n + \omega} = 2 + 5i.$$
Compute $$\frac{2a_1 - 1}{a_1^2 - a_1 + 1} + \frac{2a_2 - 1}{a_2^2 - a_2 + 1} + \dots + \frac{2a_n - 1}{a_n^2 - a_n + 1}.$$

Please I need help on this. It is very confusing.

Oct 20, 2019
edited by AoPS.Morrisville  Oct 20, 2019

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Are you the real AoPS?

Oct 20, 2019
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The answer is 15 - 3i.

Oct 29, 2019