$$x^3-3x+6 = 0$$
Answer
$$ \begin{matrix}x_1 = -2.3553 & x_2 = 1.17765+1.0773i & x_3 = 1.17765-1.0773i \end{matrix} $$
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