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Expand (a^n)-1

  1. Mar 25, 2009 #1
    Can someone help me.
    How would I expand (a^n)-1 and is there a theorem for this?

    an-1
     
  2. jcsd
  3. Mar 25, 2009 #2

    tiny-tim

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    Hi crazyformath2! :smile:

    an - 1 = (a - 1)(an-1 + an-2 + … + 1) :wink:
     
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