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Homework Help: Binomial expansion

  1. Sep 23, 2003 #1
    try this out..

    expand ( 1 + x/2 - x to the power of 2 ) to the power of n in ascending powers of x until and including the term in x to the power of 3.


    the answers given by the book is
    1 + nx/2 + n(n-9)/8 x to the power of 2 + n(n-1)(n-26)/48 x to the power of 3 + ...


    i just want to know whether the answer is correct or not.
    if possible, please show me the working. tq.
     
  2. jcsd
  3. Sep 23, 2003 #2

    Hurkyl

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    My calculator agrees.

    It's just a taylor series...
     
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