SOLUTION: explain with example how to change a positive sign while the two negative sign of products.

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Question 767282: explain with example how to change a positive sign while the two negative sign of products.
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
Actually we are simplifying when we write a double negative as a positive. One way to see this is to recognize that one interpretation of the negative is to reverse a number's direction from 0 on the number line. If the number is negative, reversing its sign makes it positive.
Ex1: -(-2)=(-1)(-1)(2)=2
Ex2: -(-(-2))=(-1)(-1)(-1)(2)=[(-1)(-1)](-1)(2)=(-1)(2)=-2