The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.4262\\[1 em]x_2 &= 0.1202+1.2449i\\[1 em]x_3 &= 0.1202-1.2449i \end{aligned} $$Polynomial $ 3x^3-2x^2+5x-2 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.