Asked by Riya
                The first term of a geometric sequence is 3 and the sum of the second and third terms is 60.  determine T1,T2, T3,
and Tn
            
        and Tn
Answers
                    Answered by
            oobleck
            
    3r + 3r^2 = 60
r^2 + r - 20 = 0
(r+5)(r-4) = 0
so the two sequences are
3,12,48, ...
3,-15,75, ...
    
r^2 + r - 20 = 0
(r+5)(r-4) = 0
so the two sequences are
3,12,48, ...
3,-15,75, ...
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