Posted by Dezy on Tuesday, October 20, 2009 at 6:01pm.
This is really just like the other one - but simpler. You don't even need the brackets, assuming the question is written correctly:
4^n + 4n -4n^2 + 2^n - 2n
(4n - 2n = 2n, sp)
4^n + 2^n - 4n^2 + 2n
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