Asked by agm
The sum of the first two terms of a gp is 28, but the sum of the 3rd and 4th terms is 252. find the 2nd term of the GP if the 7th term is 5103.
Answers
Answered by
Steve
a+ar = 28
ar^2+ar^3 = 252
solve for a and r, and then choose the values which make ar^6 positive
ar^2+ar^3 = 252
solve for a and r, and then choose the values which make ar^6 positive
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