$$x^3-7x^2-46x+291 = 0$$
Answer
$$ \begin{matrix}x_1 = 5.28467 & x_2 = -6.61231 & x_3 = 8.32764 \end{matrix} $$
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