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Homework Help: Simplifying Factorials

  1. Mar 23, 2004 #1
    How would I go about simplifying something like:
    (n+3)!/(n+1)! ?
  2. jcsd
  3. Mar 23, 2004 #2
    [tex]\frac{(n+3)!}{(n+1)!} = \frac{(n+3)(n+2)\cdot(n+1)!}{(n+1)!}=(n+2)(n+3) = n^2 + 5n + 6[/tex]

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