\documentclass{article}
\usepackage{amsmath,amssymb}
\usepackage{tkz-tab}
\usetikzlibrary{calc}
\usetikzlibrary {arrows.meta,bending}
\begin{document}
\noindent\hspace{-3cm}
\begin{tikzpicture}
\tkzTabInit[lgt=1,espcl=2,deltacl=1,nocadre]
{ $x$ /1,
$f(x)$ /1,
$f'(x)$ /1
}
{ ,$-2$ , ,
$0$, ,
$2$, ,
$4$
};
\tkzTabLine{,,,2,,0,,}
\begin{scope}[>->,line width=1pt,>=stealth]
\draw (4,-3.1) to [bend left=0] (5, -2.1);
\draw (7, -2.1)to [bend left=0] (8 , -3.1);
\end{scope}
\end{tikzpicture}
\end{document}