The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 7.7823\\[1 em]x_2 &= -5.7823 \end{aligned} $$The solutions of $ -x^2+2x+45 = 0 $ are: $ x = 1-\sqrt{ 46 } ~ \text{and} ~ x = 1+\sqrt{ 46 }$.
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