SOLUTION: find the nth term of the sequence 5,-10,15,-20

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Question 438145: find the nth term of the sequence 5,-10,15,-20
Answer by robertb(4012) About Me  (Show Source):
You can put this solution on YOUR website!
a%5Bn%5D+=+%28-1%29%5E%28n-1%295n, for n = 1,2,3,4,5,...