Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.
Review: Finding a Non-Factor
Explanation
We could feasibly compute p directly, but it would be ugly, and
we'd need to break it down into factors afterwards. As given, p is a difference of perfect squares,
and we should always be on the lookout for those.
The number 5 is not part of
this set. The correct answer is (D).
If you believe you have found an error in this question or explanation, please contact us and include the question title or URL in your message.