The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.0001\\[1 em]x_2 &= 13.6221\\[1 em]x_3 &= -5.9073+11.2649i\\[1 em]x_4 &= -5.9073-11.2649i \end{aligned} $$Polynomial $ 104x^4-188x^3+89x^2-229213x+25 $ has no rational roots that can be found using Rational Root Test, so the roots were found using quartic formulas.