1. Difference of Two Squares
(2 parts)
After completing these notes, you will be ready to do the following assignments and take the following quiz.
Assignment: Quiz:
WS “Factoring Special Cases” Lesson 4.4 Quiz Part 2
# 1-22 (front only) Friday March 2nd

2. Objective 1: After completing part 1, students should be able to recognize a difference of two squares.
For a binomial to be a difference of two squares the following must be true:
There must be two terms, both squares.
Examples of squares are:
There must be a minus sign between the two terms.
Examples with a minus are:

3. Objective 2: After completing part 2, students should be able to factor a difference of two squares.
When you are factoring a difference of two squares, use these rules:
First, check to see if you can take out a GCF
Second, find what multiplies by itself to make the first term and the second term.
Third, fill in the signs, one should be a plus, one should be a minus.
Finally, check that there is nothing left to factor within the parentheses. Sometimes you can factor another difference of two squares.

4. Examples :

5. Examples :

6. Examples. Make sure to take out a GCF first:
Then factor the difference of two squares.
Then factor the difference of two squares.
Then factor the difference of two squares.

7. Examples. Make sure to factor completely:
First, factor the difference of two squares.
Then factor the difference of two squares that’s left in the parentheses.
Stays the same.
Factors again.

8. Examples. Make sure to factor completely:
First, factor the difference of two squares.
Then factor the difference of two squares that’s left in the parentheses.
Stays the same.
Factors again.

9. Try These:
Factor.

10. Solutions:
If you did not get these answers, click the green button next to the solution to see it worked out.

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17. Stays the same.
Factors again.
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18. Stays the same.
Factors again.
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