**Factoring Trinomials using the "Criss Cross" Method**

** - a critical tool for success in PC Math 11 and 12)**

** - note: other methods are great, but I will use this particular method in class**

**Factoring "Difference of Squares"**

** - Use this method only when...**

** - you have two terms in your expression (a binomial)**

** - each term is a perfect square **

** - there is subtraction between the two terms (this is called a "difference")**