Problem:
Find the eigenvalues of the following matrix:
$\left(
\begin{array}{cc}
 4 & -7 \\
 -4 & -10 \\
\end{array}
\right)$.
Answer:
$\left\{-3-\sqrt{77},\sqrt{77}-3\right\}$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/eigenvalues/14992.txt'}