Answer
-1
Work Step by Step
Plugging in $-1$ for $p$ and simplifying, we find:
$$ -(-1)^2 \\ -(1) \\ -1$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.