Name _________________________
Algebra I
Unit 8 Day 4 - Factoring
Date ______
 Today we will learn how to factor trinomials into two binomials.
 By the end of class you will be able to factor trinomials into two binomials.
x2 + 3x + 2
What two numbers can you add to get a 3 , but multiply to get a 2? ______ and
______
x2 + 13x + 36
What two numbers can you add to get a 13 , but multiply to get a 36? ______ and
______
x2 + 8x - 20
What two numbers can you add to get a 8 , but multiply to get a –20? ______ and
______
x2 - 3x - 4
What two numbers can you add to get a –3 , but multiply to get a –4? ______ and
______
x2 – 8x + 15
What two numbers can you add to get a –8 , but multiply to get a 15? ______ and
______
Factor the following.
x 2 + 7x + 10
x 2 - 8x + 7
x 2 + x – 12
x 2 - 4x - 21
You try!
x 2 + 4x + 3
x 2 + 7x + 6
x 2 + 8x + 12
x 2 + 9x + 18
x 2 - 2x + 1
x 2 - 6x + 8
x 2 + 3x - 10
x 2 - 5x - 14
Don’t forget to look for a _____________.
2x2 + 12x + 16
3x2 – 24x + 36
You try!
5x2 + 15x - 20
2x2 – 14x – 36
Some trinomials do not __________. If so, write _______________.
x2 - 10x – 12
x2 + 3x - 8