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Formula q_645 - ArqMath20

Formula q_645 (Q480)

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Language	Label	Description	Also known as
English	Formula q_645	No description defined

Statements

arqmath formula id

q_645

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Defining formula

1^{2} + 2^{2} + .... + n^{2} = \frac{n (n + 1) (2 n + 1)}{6}

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