This the solution with explanation for problem 3-109b that we did not have time to finish in class.
This shows the basic parts of a geometric sequence
This clip shows how to write the rule for arithmetic sequences
This tutorial will explain the basics of what an Arithmetic sequence is.
Factoring perfect squares
More factoring by grouping
Factoring by grouping (different than diamond/box, if you want to try something different)
Taking out common factors