Factoring Trinomials a=1 (Shortcut for Factoring by Grouping)

This video on factoring trinomials by grouping explains a shorcut when a=1. When we work out the first example, we show you why you don't need to do the entire grouping process when factoring trinomials by grouping with a=1. We then work several more examples with the shortcut, avoiding the process of factoring by grouping.
0:00 Example 1 (Introduction to the shortcut)
3:50 Example 2
5:06 Example 3
7:16 Example 4
8:26 Example 5