The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.5352\\[1 em]x_2 &= -1.8685 \end{aligned} $$The solutions of $ 3x^2+4x-3 = 0 $ are: $ x = -\dfrac{ 2 }{ 3 }-\dfrac{\sqrt{ 13 }}{ 3 } ~ \text{and} ~ x = -\dfrac{ 2 }{ 3 }+\dfrac{\sqrt{ 13 }}{ 3 }$.
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