# Easy but complex

Algebra Level pending

A complex number $$z$$ follows the following formula

$\sqrt[2n+1]{z} = 1, r_1, \ldots r_{2n+1}$

Where $$n$$ is any positive integer which satisfies

$n \geq 1$

and $$r_x$$ is a root.

Out of the following, which is equal to the sum of the roots.

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