Hi there. This post is about the difference of squares factoring method.
Difference of Squares Factoring
Factoring and expanding are opposite algebra operations of each other.
Square Numbers
With the difference of squares factoring, we deal with mostly even (positive) exponents and square numbers. It is helpful to know your square numbers such as 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121 and 144 which correspond to their (respective) square roots 1, 2, 3, 4, ..., 12.
Remember that the square root of x (with x at least 0) can be represented with the square root sign or with exponents.
Note
Examples
Here are some examples which showcase how this factoring method works.
Example One
Example Two
Example Three
Practice Problems
Solutions
Extension
