\documentclass{handout}

\begin{document}

\includegraphics{topic/img/PotenzN_PotenzQ.png}
\hspace{2cm}
\includegraphics{topic/img/PotenzQ_PotenzNQ.png}

\vspace{1cm}

\includegraphics{topic/img/PotenzN_PotenzQ.png}
\hspace{2cm}
\includegraphics{topic/img/PotenzQ_PotenzNQ.png}

\vspace{1cm}

\includegraphics{topic/img/PotenzN_PotenzQ.png}
\hspace{2cm}
\includegraphics{topic/img/PotenzQ_PotenzNQ.png}
\end{document}