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Home > INT3 > Chapter 2 > Lesson 2.2.4 > Problem 2-106
2-106.
Factor each expression completely.
This is a difference of two squares.
If you don't know the pattern for difference of two squares yet, use a generic rectangle to help you.
is a common factor. Factor it out. What is left is a difference of two squares, as in part (a). Factor again.
You can use an area model.
The common factor is
. After you factor out
you have to factor a second time.