SOLUTION: Why must a - number times a - number result in a positive number?
Algebra.Com
Question 69388: Why must a - number times a - number result in a positive number?
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
When multiplying or dividing, the rule is, when the signs are the same, the answer is positive.
When the signs are different the answer is negative:
Hope that helps to keep it straight.
Happy Calculating!!!
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