SOLUTION: can you show me the steps of working out, (-1)power n n divided by n+4 Un= 7/9

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Question 366893: can you show me the steps of working out, (-1)power n n divided by n+4 Un= 7/9
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
What does Un mean?
I think the terms of your series are
a%5Bn%5D=%28-1%29%5En%2A%28n%2F%28n%2B4%29%29