Find roots of polynomial $$ p(x) = x^3-3x^2-9x-9 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 5.1072\\[1 em]x_2 &= -1.0536+0.8075i\\[1 em]x_3 &= -1.0536-0.8075i \end{aligned} $$Explanation
Polynomial $ x^3-3x^2-9x-9 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.
This page was created using
Polynomial Roots Calculator