The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 5.1409\\[1 em]x_2 &= 0.4295+0.6317i\\[1 em]x_3 &= 0.4295-0.6317i \end{aligned} $$Polynomial $ x^3-6x^2+5x-3 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.