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# FP1: Series homework help

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1. FP1: Series homework help
I'm currently struggling on a 'show that' question on my FP1 Series homework, i really appreciate any help at all.

The question is, 'Show that N Sigma r=1 of r(2r+1) = 1/6n(n+1)(4n+5)
2. Re: FP1: Series homework help
(Original post by BigCal007)
I'm currently struggling on a 'show that' question on my FP1 Series homework, i really appreciate any help at all.

The question is, 'Show that N Sigma r=1 of r(2r+1) = 1/6n(n+1)(4n+5)

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