Answer
$a^{2}-12a+11$
Work Step by Step
Make a table of products.
$\begin{array}{rll}
& a & -11\\
\hline a| & a^{2} & -11a\\
-1| & -a & 11
\end{array}$
Answer: $a^{2}-11a-a+11$, or $a^{2}-12a+11$.
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