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Contents
Binomial Theorem
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Binomial Theorem
for positive integral index
  Determine
the middle terms of the binomial expansion of  .
Hence find the coefficient of x10 in the expansion of 
Solution:
The expansion
has 10 terms. Hence the middle terms are the 5th and 6th term.
5th term
6th term
 
coefficient is
 .Find
the term independent of x in the binomial expansion of .
Leave your answer in standard form approximated to 3 significant figures.
Solution:
General term
Term independent of x,
18 - 3r = 0 ---> r = 6
Term
= 6.31 X 1011
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