SOLUTION: i) Find the first term of the geometric progression with r=-5 if the sum of the first 6 terms is 2604.

Question 1023902: i) Find the first term of the geometric progression with r=-5 if the sum of the first 6 terms is 2604.
(ii) Write down the first 6 terms of the geometric progression in (i) above.
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
(i) The formula for the sum of the first n terms of a GP is
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(ii) The first six terms are -1, 5, -25, 125, -625, 3125.
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