1. Warmup Find the GCF for #1. Factor #s 2-4. 1. 2. 3. 4

2. Homework Questions? Pg. 579

3. 10-3 Factoring Trinomials Objective: To identify a prime trinomial and to factor a trinomial completely. Standard 11.0

4. Example 1 Factor completely. 18x 2 + 21x + 6 3(6x 2 + 7x + 2) 12 7 3 4 6x 2 2 3x 4x 3x 2x1 2 3(3x + 2)(2x + 1) 1 st3 rd 2 nd Pick 2 #s that multiply to get the top and add to get the bottom. Those go on the sides of the X. Don’t forget the 3 out front! Factor out the GCF first!

5. LTT (Let’s try together)

6. TOO (hint: factor out the GCF first)

7. Class Challenge

8. What about this?... #36 on tonight’s homework: -15 -3 ? ? There are no numbers that multiply to get -15 and add to get -3… So you write PRIME

9. Homework Pg. 579 # 36, 38-45 Do your homework!

10. Helpful X hints… (again) + + ++ + - -- - + + big- small - - - big + small