G.P.:
First term:6
Hence
I assume you mean 1st 3 terms
Solve this quadratic equation for your answer
Part b
6th term:
With value of a and r, insert for answer
For a geometric progression,the first term is 6 and the sum of the 3 terms is 126.FindThe nth partial sum isa)the possible values of the common ratio
So, the sum of the first 3 terms is given as and the first term is
Solve for r.
Just use once you find r.b)the 6th term of the geometric progression.