The roots of polynomial $ p(z) $ are:
$$ \begin{aligned}z_1 &= -4+3i\\[1 em]z_2 &= -4-3i \end{aligned} $$The solutions of $ z^2+8z+25 = 0 $ are: $ z = -4+3i ~ \text{and} ~ z = -4-3i$.
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