Derive the formula ∑limits_{n=1}^{R}{{n^2}=(R(2R+1)(R+1))/(6)}


Question: Derive the formula

\[\sum\limits_{n=1}^{R}{{{n}^{2}}=\frac{R\left( 2R+1 \right)\left( R+1 \right)}{6}}\]
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See Answer: The solution consists of 1 page
Deliverables: Word Document

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