\documentclass{article}

\usepackage{mkessler-faktor}

\begin{document}

\[
    \faktor{A}{B} \cong \cofaktor{A}{B}
\] 
\[
    \faktor{A}[1]{B}[-1.5] \cong \cofaktor{A}[-1]{B}[0.5]
\] 
\[
    \cofaktor*{A}[-1]{B}[2]  = x
\]
\end{document}