$$-x^3+16x^2-7x+120 = 0$$
Answer
$$ \begin{matrix}x_1 = 16.03031 & x_2 = -0.01515+2.73598i & x_3 = -0.01515-2.73598i \end{matrix} $$
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