Question: I don't know how to evaluate the sum Prove by induction that for any positive integer n, :(r2+r+1) = 11012 +3n+5). Use the above result

I don't know how to evaluate the sum

I don't know how to evaluate the sum Prove by induction

Prove by induction that for any positive integer n, :(r2+r+1) = 11012 +3n+5). Use the above result to evaluate the sum 1x2+2x3+3x4+ ..... +2009x2010

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