$$-x^3+2x^2+5x+5 = 0$$
Answer
$$ \begin{matrix}x_1 = 3.71062 & x_2 = -0.85531+0.78481i & x_3 = -0.85531-0.78481i \end{matrix} $$
Explanation
This polynomial has no rational roots that can be found using Rational Root Test.
Roots were found using qubic formulas.
This page was created using
Polynomial Equations Solver