1. Warm-Up:
Write down what remains. c.

2. Warm-up Solutions:
6x2
3cd
a2 + 2ab – 3b2
Homework Questions?

3. Extra Practice Factor the following:
x2 +4x -32
4x2 +4x -3
3x2 + 11x – 20
2x2 – 5x + 7

4. Take Note!
What do you do if there are no factors that add to equal “b” and multiply to give “ac”?
The trinomial is NOT FACTORABLE

5. Factoring by Grouping Steps for factoring by grouping:
1. Works best for polynomials with 4 or more terms.
2. We factor the first two terms and the second two terms separately. Use the rules for GCF to factor these.

6. Examples: These two terms must be the same.

7. Examples:
These two terms must be the same.
You must always check to see if the expression is factored completely. This expression can still be factored using the rules for difference of two squares.
This is a difference of two squares.

8. Examples: These two terms must be the same.
You can rearrange the terms so that they are the same.
These two terms must be the same.
But they are not the same. So this polynomial is not factorable.

9. Try These:
Factor by grouping.

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

11. BACK

12. When you factor a negative out of a positive, you will get a negative.
BACK

13. Now factor the difference of squares.
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14. BACK

15. Factoring By Grouping Classwork Practice
Homework: Workbook Section 5.4 pg. 62
3rd column (3 – 75) odd