I think the explanations are pretty clear here in the picture. The top relates to yesterday's explanation. The only thing I did not cover in the picture was absolute value. Absolute value is basically asking a number how far it is from zero. It is never a negative answer to that question. So the absolute value of 3 is 3. The absolute value of -3 is also 3. I3I=3 AND I-3I=3
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September 2015
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