1. AIM: Factoring Trinomials
Do Now
Solve and check.
CHECK
1

2. 2

3. Anticipatory Set
Find, correct, and explain the mistakes in
the following examples.
x2 - 5x - 6
(x - 1)(x + 6)
3

4. 1
A
A
B
C B
D C
D
4

5. 2
A
B
A
C
B
D
C
D
5

6. 3
A
B
C A
D B
C
D
6

7. 4
A
B
C A
D
B
C
D
7

8. 5
A
B
C A
D B
C
D
8

9. 6
A
B
C A
D B
C
D
9

10. Factor the trinomial
7
A
A (x +5)(x - 4)
2
B
C
x - x - 20 B (x -5)(x +4)
C (x +5)(x +4)
10

11. 8
A (x - 8)(x + 3)
Factor the trinomial
A B (x + 6)(x - 4)
B 2
x + 2x - 24 C (x - 6)(x - 4)
C
11

12. Factor the trinomial
9 A
A B A (x - 6)(x + 3)
2
y - 3y - 18
B C B (x - 6)(x - 3)
C D
C (x - 9)(x + 2)
12

13. Factor the trinomial
10
A
A (x + 12)(x - 12)
2 B (x + 12)(x + 12)
x - 24x + 144
B
C
C (x - 12)(x - 12)
13

14. BEFORE YOU LEAVE
Graphing Connection
The goal of factoring is to find the roots of a polynomial.
We can graph on the graphing calculator to show the
roots.
2
a.) x - x - 20
(x - 5)(x + 4)
14

15. Mr. Tjersland's Math 7
Homework: Factor Numbers 21 to 28 on Homework Sheet
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