Thursday: Announcements

GROUPS of 4 with desks

Check homework with group

If not done last night,use phones to check forcorrect answers!

Thursday: Announcements

• Friday is the end of the 2nd Grading Period

• Check grades in Skyward for all classes to see if any errors (missing or incorrect grades)

• Upcoming Retest

Re-testing Unit 4

TUTORIALS Thursday Friday Monday Tuesday

Morning7:45am

YES YES YES YES

Afternoon3:55 pm

YES NO YES YES

Complete Test Corrections and thenRetest NO LATER Than Wednesday

Section 4-4

Factoring a trinomial ax2 + bx + c

When a = 1

Objectives

•I can factor a trinomial in format:

• ax2 + bx + c

FOIL Review

( 6)( 5)x x ( 7)( 3)x x

Multiply these with FOIL

FOIL Review

( 6)( 5)x x First Terms Outside Terms Inside Terms Last Terms

2x 5x 6x 30

2 1 30x x

FOIL Review

( 7)( 3)x x First Terms Outside Terms Inside Terms Last Terms

2x 3x 7x 21

2 4 21x x

Factoring a Trinomial

• When factoring an expression with 3 terms you will always get two factors

• x2 + bx + c

( #)( *)x x

Factoring a Trinomial

2x bx c ( ___)( ___)x x

What do these numbers have to be?

2x bx c ( ___)( ___)x x

What do these numbers have to be?They MULTIPLY to "c"

They ADD to "b"

FOIL Method

( #)( *)x x

2 5 6x x

The two numbers # and * must multiply together to equal 6The two numbers # and * must add up to 5

Example 1

2 5 6x x

( __)( __)x x

Factoring Tree6

1 61 6 2 32 3

( 2)( 3)x x

Example 2

2 3 18x x

( __)( __)x x

Factoring Tree18

1 181 182 92 9

( 3)( 6)x x

3 63 6

Example 3

2 3 8x x

( __)( __)x x

Factoring Tree

81 81 82 4

2 4PRIME

GROUP Practice

• Complete the 4 problems on the front side of your ½ sheet!!

• Put your Name at the TOP• Be READY to present your

answers!!

Exit Slips• Complete the 4 problems on the

BACK side of your ½ sheet!!

• In TOP right corner list the number of your choice for BEST Pumpkin Design

• Get Homework : WS 5-2

Example 3

2 4 4x x

( __)( __)x x

Factoring Tree4

1 41 4 2 2

2 2 ( 2)( 2)x x