Find roots of polynomial $$ p(x) = -x^4+60x^3+100x^2-8000x-260000 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 21.579\\[1 em]x_2 &= 58.0153\\[1 em]x_3 &= -9.7972+10.5687i\\[1 em]x_4 &= -9.7972-10.5687i \end{aligned} $$Explanation
Polynomial $ -x^4+60x^3+100x^2-8000x-260000 $ has no rational roots that can be found using Rational Root Test, so the roots were found using quartic formulas.
This page was created using
Polynomial Roots Calculator