Factoring The Difference Of Two Perfect Squares

                    Lesson 1

Problem:                   Solve: a²-36

Solution                    Both a² and 36 are perfect squares. 

Step 1:  

Solution What times itself will give a²? The answer is a.

Step 2:                        

What times itself will give 36? The answer is 6.

Solution The factors are: (a-6)(a+6)

Step 3:           

                                                            Solution                    The answer is:  (a-6)(a+6)

 Complete   

                                                            Try two practice problems:  

Solve:

A. a²- 4   

B. b²- 64

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