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Distributive property?

  1. Jul 24, 2015 #1
    1. The problem statement, all variables and given/known data
    understanding the following equation:


    I don't know from where the first ##n## on the RHS comes and how this is related to a single addition of ##(n+1)^n##.

    2. Relevant equations

    3. The attempt at a solution
    My guess is that it has something to do with the distributive property or the binomial theorem, but i don't see how. The fact that this is very basic, i don't know how to attack the problem. I don't know of any intermediate steps. If someone wants to point out an intermediate step, it would be very much appreciated.
  2. jcsd
  3. Jul 24, 2015 #2
    Hint: distribute the second term in parenthesis to the first term.
  4. Jul 24, 2015 #3
    Aaaah, now i see it. I can't believe i did not notice it earlier. Thanks for the hint!
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