The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.4765\\[1 em]x_2 &= 2.6732\\[1 em]x_3 &= 7.8503 \end{aligned} $$Polynomial $ x^3-11x^2+26x-10 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.