Answer
$-2.18; -0.32; 1.11;$
Work Step by Step
We are given the function:
$$f(x)=3x^5+2x^4-8x^3+4x^2-x-1.$$
We use a graphing calculator to graph the function and the $zero$/$root$ feature to find an approximation of the real zeros of the function. We find:
$$\begin{align*}
x_1&\approx -2.18\\
x_2&\approx -0.32\\
x_3&\approx 1.11.
\end{align*}$$
