I'm sorry that I don't know the code for sigma notation for the forums but my question is a fairly straight forward one.

I've been given

$\displaystyle End = 35, Start = 1 (3n^2+5n-2)$

$\displaystyle End = 50, Start = 1 (n-4)^3$

I would be a

*serious* pain in the butt to input each number into the equation and add them all up, so I'd like to know if anyone knew the formulas? I have found the formulas.

At this

url, and my question is...accoding to the formulas, I start with a negative number? Considering the number without an exponent or variable (-2) is negative.