The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 1.5858\\[1 em]x_2 &= 4.4142\\[1 em]x_3 &= 4+i\\[1 em]x_4 &= 4-i \end{aligned} $$Polynomial $ x^4-14x^3+72x^2-158x+119 $ has no rational roots that can be found using Rational Root Test, so the roots were found using quartic formulas.