$$3x^3+3x^2+48x+60 = 0$$
Answer
$$ \begin{matrix}x_1 = -1.22845 & x_2 = 0.11423+4.03331i & x_3 = 0.11423-4.03331i \end{matrix} $$
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
Equations Solver