The roots of polynomial $ p(b) $ are:
$$ \begin{aligned}b_1 &= 6.2426\\[1 em]b_2 &= -2.2426 \end{aligned} $$The solutions of $ b^2-4b-14 = 0 $ are: $ b = 2-3 \sqrt{ 2 } ~ \text{and} ~ b = 2+3 \sqrt{ 2 }$.
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