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What am I doing wrong here?

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What am I doing wrong here? [#permalink] New post 22 Sep 2009, 10:51
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I just started studying again---after a long lay off---and came across this one. It doesn't seem very tough, but I'm having problems w/it.

2a^-3/b^2 =
1/2a^3*(1/b^2) =
1/2a^3(b^2)
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Re: What am I doing wrong here? [#permalink] New post 22 Sep 2009, 16:07
Just a simple mistake: the constant preceding the variable 'a' is not a part of the exponent. When you bring the term a below the divisor, the constant 2 should remain on top:

\frac{2a^{-3}}{b^2}
=\frac{2}{a^3*b^2}
Re: What am I doing wrong here?   [#permalink] 22 Sep 2009, 16:07
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