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Binomial expansion

  1. Sep 23, 2005 #1
    could anyone explain binomial expansion in the simplest way?
     
  2. jcsd
  3. Sep 24, 2005 #2
    Do you already know basic combinatorics ? Instead of looking at (x+1)n, look at (x1 + 1)(x2 + 1)...(xn + 1), then let x1=...=xn.
     
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