Find roots of polynomial $$ p(x) = x^3-18x^2-59x-78 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 20.9882\\[1 em]x_2 &= -1.4941+1.2182i\\[1 em]x_3 &= -1.4941-1.2182i \end{aligned} $$Explanation
Polynomial $ x^3-18x^2-59x-78 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.
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