1. Factoring Trinomials 1
February 1, 2017

2. Outline
Essential Question
Factoring using X method
Examples

3. Essential Question
How do I factor trinomials using the X method?

4. Factoring Using the X method
To factor a trinomial means to write it as the product of two binomials.
Factor x2 + 6x +8

5. Factoring Using the X method
x2 + 6x +8
What two numbers multiply to give you 8, but add to give you 6? 8 2 4 6

6. Factoring Using the X method
x2 + 6x +8
(x+__)(x+__)
(x+2)(x+4) 8 2 4 6

7. Examples
x2 - x -42
What two numbers multiply to give you -42, but add to give you -1?
-42 -7 6 -1

8. Examples
x2 - x -42
(x+__)(x+__)
(x-7)(x+6)
-42 -7 6 -1

9. Examples
x2 - 16x +64
(x+__)(x+__)
(x-8)(x-8) 64 -8 -8
-16

10. Examples
x2 - 3x +2
(x+__)(x+__)
(x-2)(x-1) 2 -2 -1 -3