The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 5\\[1 em]x_2 &= -\frac{ 4 }{ 3 } \end{aligned} $$The solutions of $ 3x^2-11x-20 = 0 $ are: $ x = -\dfrac{ 4 }{ 3 } ~ \text{and} ~ x = 5$.
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