Summation Problem: Calculating \( \sum_{n=-2}^{2} (n^2 - 3n) \)

Summation of Quadratic Expression from n = 2 to 5

Summation and Quadratic Identity Proof: 2 + 6 + 12 + ... + n(n+1) = n(n+2)

Summation Problem Simplifying \(\sum_{i=1}^{n}(i + 2)^3 - \sum_{i=3}^{n+1} i^3\)

Evaluating Summation of (i - 3)^2 for i = 1 to 200