Download - 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