$$x^3+7x^2-16x+12 = 0$$
Answer
$$ \begin{matrix}x_1 = -8.93988 & x_2 = 0.96994+0.63365i & x_3 = 0.96994-0.63365i \end{matrix} $$
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