hi
i try this:
sum of numbers= n(n+1)/2
then i get the square.
after that i found an equation about sum of squares:
(2*n^3 +3*n^2+n )/6
but i didn't get right result !!!!
so where i lost the control ?
thanks
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hi
i try this:
sum of numbers= n(n+1)/2
then i get the square.
after that i found an equation about sum of squares:
(2*n^3 +3*n^2+n )/6
but i didn't get right result !!!!
so where i lost the control ?
thanks