The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 840+120 \sqrt{ 31 }i\\[1 em]x_2 &= 840-120 \sqrt{ 31 }i \end{aligned} $$The solutions of $ 20x^2-33600x+23040000 = 0 $ are: $ x = 840+120 \sqrt{ 31 }i ~ \text{and} ~ x = 840-120 \sqrt{ 31 }i$.
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