The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= -0.996\\[1 em]x_2 &= -0.602+14.1647i\\[1 em]x_3 &= -0.602-14.1647i \end{aligned} $$Polynomial $ 5x^3+11x^2+1011x+1001 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.