### Home > PC > Chapter 2 > Lesson 2.2.1 > Problem 2-42

2-42.

Expand each of the following sums and find them. Homework Help ✎

1^{2} + 2^{2} + 3^{2} + 4^{2}

30

(6(2) − 2^{2}) + (6(3) − 3^{2}) + (6(4) − 4^{2}) + (6(5) − 5^{2}) + (6(6) − 6^{2})

Now evaluate the sum.

Follow the same process as shown in parts (a) and (b).

Be sure to note the starting and ending indices!