$$-9x^4-3x^3 = 0$$
Answer
$$ \begin{matrix}x_1 = 0 & x_2 = -\dfrac{ 1 }{ 3 } \\[1 em] \end{matrix} $$
Explanation
In order to solve $ \color{blue}{ -9x^{4}-3x^{3} = 0 } $, first we need to factor our $ x^3 $.
$$ -9x^{4}-3x^{3} = x^3 \left( -9x-3 \right) $$$ x = 0 $ is a root of multiplicity $ 3 $.
The second root can be found by solving equation $ -9x-3 = 0$.
This page was created using
Polynomial Equations Solver