\documentclass[tikz, border=2pt]{standalone}

\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage[T1]{fontenc}
\usepackage{fourier}

\usepackage{tikz}
\usetikzlibrary{circuits}
\usetikzlibrary{circuits.pid.ISO14617}
\usetikzlibrary{positioning,calc}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}

\begin{document}
	\begin{tikzpicture}
		\begin{axis}[
			xlabel=$x$,
			ylabel={$f(x) = x^2 - x +4$}
			]
			% use TeX as calculator:
			\addplot {x^2 - x +4};
		\end{axis}
	\end{tikzpicture}
\end{document}