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Negative Times a Negative

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Visit this site: http://mathforum.org/dr.math/faq/faq.negxneg.html
Author:Math Forum, Ask Dr. Math FAQ
Description: Why does a negative times a negative equal a positive? Does this ever happen in the real world?
Levels: Elementary, Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Frequently Asked Questions (FAQs)
Math Topics: Negative Numbers

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