Problem:
Compute
$\left(
\begin{array}{cc}
 2 & -1 \\
 3 & -1 \\
\end{array}
\right)^2$.
Answer:
$\left(
\begin{array}{cc}
 1 & -1 \\
 3 & -2 \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/powers_and_exp/17711.txt'}