Sorry i'll write the equation in full. We get (6(-1)^n-1)/n(n+1)(2n+1) = -6/n + 6/n+1 -24/2n+1 not sure how to get from this to the part at the bottom of the question!
Sorry i'll write the equation in full. We get (6(-1)^n-1)/n(n+1)(2n+1) = -6/n + 6/n+1 -24/2n+1 not sure how to get from this to the part at the bottom of the question!
We have found that the first 2 terms end up cancelling leaving a remainder of 1. We're still not sure how the 3rd term is linked to the hint in any way, as we are being completely thrown by the x^2n+1. Thanks for the help so far!