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Grade:
        

sir,please suggest a standard formula for calculating the sum of first n perfect squares


that is 1+4+9+..................................n=?

7 years ago

Answers : (2)

ganesh lakkaraju
18 Points
							

formula is n(n+1)(2n+1)\6

7 years ago
nehal helal
4 Points
							

thank very much sir i am obligue to you

is it derived by writing 1+4+9+16......................................n=1+1+3+1+3+5+1+3+5+7........................................n.

if it does not bother you please explain

7 years ago
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