Removing the exponent
This is the question and the answer, but I don't understand it.
With an exponent of ^2 it's a simple matter -3(-2)^2 = -3(4). But the problem below has both a negative exponent and an exponent less than 2. Can someone help me understand first how a negative exponent effects a problem and then how an exponent of less than 2 effects a problem? Thanks.
-3(-2)^-1 = -(3/-2)
With an exponent of ^2 it's a simple matter -3(-2)^2 = -3(4). But the problem below has both a negative exponent and an exponent less than 2. Can someone help me understand first how a negative exponent effects a problem and then how an exponent of less than 2 effects a problem? Thanks.
-3(-2)^-1 = -(3/-2)
SOLUTION
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ASKER CERTIFIED SOLUTION
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SOLUTION
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ASKER
Thanks for your help. I think I understand this a little better.
You're welcome.
BTW - I tend not to try to remember a lot of formulas. Instead I try to understand their derivation, and use that approach when thinking about these types of problems.
BTW - I tend not to try to remember a lot of formulas. Instead I try to understand their derivation, and use that approach when thinking about these types of problems.
http://www.mathsisfun.com/algebra/negative-exponents.html
http://www.youtube.com/watch?v=Sqjy1RGYn_M