$$-x^3+6x^2-6x+4 = 0$$
Answer
$$ \begin{matrix}x_1 = 4.95137 & x_2 = 0.52431+0.73004i & x_3 = 0.52431-0.73004i \end{matrix} $$
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