The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 6.7475\\[1 em]x_2 &= 0.1262+0.5296i\\[1 em]x_3 &= 0.1262-0.5296i \end{aligned} $$Polynomial $ x^3-7x^2+2x-2 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.