4.
$$\mathbf { A } = \left( \begin{array} { c c }
2 p & 3 q
3 p & 5 q
\end{array} \right)$$
where \(p\) and \(q\) are non-zero real constants.
- Find \(\mathbf { A } ^ { - 1 }\) in terms of \(p\) and \(q\).
Given \(\mathbf { X A } = \mathbf { B }\), where
$$\mathbf { B } = \left( \begin{array} { c c }
p & q
6 p & 11 q
5 p & 8 q
\end{array} \right)$$ - find the matrix \(\mathbf { X }\), giving your answer in its simplest form.