SOLUTION: Can you give me some proves why does the product of two negative numbers is positive? Could you help me? Thank you in advance,,

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Question 201694: Can you give me some proves why does the product of two negative numbers is positive? Could you help me? Thank you in advance,,
Answer by vleith(2825) About Me  (Show Source):
You can put this solution on YOUR website!
See this --> http://www.algebra.com/cgi-bin/show-question-source.mpl?solution=151930