Question

Series question. Find the sum.

Answer 1

\[\sum_{n+1}^{\infty} \frac{ 1 }{ n^3 + 3n^2 +2n }\]

Answer 2

do you know how to do partial fractions?

Answer 3

a/n + b/(n+1) + c/(n+2) like this?

Answer 4

n^3 +3n^2 +2n = n(n^2 +3n +2) =n(n+2)(n+1)

use this for denominator - i think