SOLUTION: 5th term in expansion of (2x-1)^7 ?

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Question 431449: 5th term in expansion of (2x-1)^7 ?
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
Solution:The fifth term at binomial formula is:
7C4%2A%282x%29%5E3%2A%28-1%29%5E4=
%287%2A6%2A5%2A4%29%2F%282%2A3%2A4%29%2A%282x%29%5E3%2A%28-1%29%5E4=
35%2A8x%5E3=
280x%5E3.
Done.