Problem:
Find the characteristic polynomial of the following matrix:
$\left(
\begin{array}{cc}
 8 & -2 \\
 -7 & 2 \\
\end{array}
\right)$
Answer:
$x^2-10 x+2$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/characteristic_polynomial/34722.txt'}