Question:
Compute $(\mathrm{AB})^{-1}$ when $\mathrm{A}=\left[\begin{array}{ccc}1 & 1 & 2 \\ 0 & 2 & -3 \\ 3 & -2 & 4\end{array}\right]$ and $\mathrm{B}^{-1}=\left[\begin{array}{ccc}1 & 2 & 0 \\ 0 & 3 & -1 \\ 1 & 0 & 2\end{array}\right]$
Solution:
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