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Hello,

I know how to figure out the formula for 1 +2 + 3 + ... + n (i.e., (1+n)n/2 ). But what is the formula for 1^2 + 2 ^2 + 3^2 + .... + n^2? How does one formulate it?

Thanks,

DDTHAI

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# Formula for 1^2 + 2 ^2 + +n^2?

**Physics Forums | Science Articles, Homework Help, Discussion**