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

2-42.

Expand each of the following sums and find them.

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

Be sure to note the starting and ending indices!

2-42.

Expand each of the following sums and find them.

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

Be sure to note the starting and ending indices!