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November 21, 2014

November 21, 2014

Posted by **Maria** on Friday, January 21, 2011 at 2:57am.

n^2-9/(n+3)^2

- College algebra -
**drwls**, Friday, January 21, 2011 at 3:02amn+3 is a factor of both numerator and denominator.

You should recognize that

n^2-9 = (n-3)(n+3)

Cancel out the n+3 terms.

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