Math Contest: find value of 1^2-2^2+3^2-4^2+...-(2006)^2+(20

[jessieputono]

Okay I had a math contest today...and I just wanted to check if I got the answers correct for this question...
Find the value of s
s=1^2-2^2+3^2-4^2+...-(2006)^2+(2007)^2
I got 2015028

 

[pka]

Re: Math Contest

Okay I had a math contest today...and I just wanted to check if I got the answers correct for this question...
Find the value of s
s=1^2-2^2+3^2-4^2+...-(2006)^2+(2007)^2
I got 2015028

I got 2015028. So that is two of us.