The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= -0.2679\\[1 em]x_2 &= -3.7321 \end{aligned} $$The solutions of $ x^2+4x+1 = 0 $ are: $ x = -2-\sqrt{ 3 } ~ \text{and} ~ x = -2+\sqrt{ 3 }$.
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