The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 1+\frac{\sqrt{ 39 }}{ 3 }i\\[1 em]x_2 &= 1- \frac{\sqrt{ 39 }}{ 3 }i \end{aligned} $$The solutions of $ 3x^2-6x+16 = 0 $ are: $ x = 1+\dfrac{\sqrt{ 39 }}{ 3 }i ~ \text{and} ~ x = 1-\dfrac{\sqrt{ 39 }}{ 3 }i$.
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