SOLUTION: using the expression for the nth term of a geometric progression, compute the 8th term of the geometric progression: 72, -24, 8,....

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Question 900372: using the expression for the nth term of a geometric progression, compute the 8th term of the geometric progression: 72, -24, 8,....
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Geometric sequence: n = -1/3
+a%5Bn%5D+=+a%5B1%5Dr%5E%28n+-+1%29
+a%5B8%5D+=+72%28-1%2F3%29%5E%287%29