Matrices adjust column spaces

Copy latex
\begin{align}
\begingroup
    % sets length between columns five points.
	\setlength\arraycolsep{5pt}
     \begin{bmatrix}
     ...
     \end{bmatrix}
\endgroup
\end{align}

Copy latex
\begin{align}
\begingroup
    % sets length between columns five points.
	\setlength\arraycolsep{5pt}
     \begin{bmatrix}
     ...
     \end{bmatrix}
\endgroup
\end{align}