SEQUENCE AND SERIES| SUM OF G.P &SUM TO INFINITY| DIFFERENCE OF TWO CUBES.

This problem is quite very easy and direct to solve...It is just combining the sum of the nth term of a G.P to the sum to infinity.By using difference of two cubes the common ratio r can easily be factored.
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#algebra
#maths
Geometric progression
sum of G.P
difference of 2 cubes.