1. 9-15 Do Now
Ed is a baseball player who gets a hit 6 times out of every 20 times at bat. How many hits will Ed expect to get if he is at bat 200 times?

4. Review 9-15 Factor by grouping

5. Review : Factor by grouping

6. Objective I can factor trinomials

7. Factoring a Trinomial of the Form ax2 + bx + c where a=1
Find two numbers whose product is c and whose sum is b.
Factors of C
Sum of factors = b

8. Example 1 Solution Factor x2 + 13x + 30. factors of 30 Sum of Factors1, 2, 3,
Correct pair
So x2 + 13x + 30 = (x + 3)(x + 10).

9. Example 2
Factor x2 – 11x + 24.

10. Example 3
Factor the polynomial x2 – 2x – 35.

11. Classwork #’s 19-26, 29, 30
Look at next slide for classwork

13. Stop here

14. Factoring a Trinomial of the Form ax2 + bx + c by Grouping where a≠1
1. Find the two numbers whose product is a • c and whose sum is b.
2. Write the term bx as a sum by using the factors found in Step 1.
3. Factor by grouping.

15. Example Solution Factor 3x2 – 10x – 8. a = 3, b = −10, and c = −8
3x2 – 10x – 8 = 3x2 – 12x + 2x – 8
(3x2 – 12x) + (2x – 8) = 3x(x – 4) + 2(x – 4)
= (3x + 2)(x – 4)

16. Example
Factor 3x2 – 7x + 6.