5.3.notebook
February 25, 2015
5.3 Factoring (Difficult Type)
Example:
(3x + 5)(2x + 7) =
6x2 + 31x + 35
(Heavy­Duty F.O.I.L.) Easy Parts:
(3x + 5)(2x + 7)
(3x + 5)(2x + 7)
Last
First
6x2 + 31x + 35
6x2 + 31x + 35
Hard (HARD!!) Part:
(3x + 5)(2x + 7)
Outside
21
Inside
10
6x2 + 31x + 35
1
5.3.notebook
February 25, 2015
Now, esrever it!
8x2 + 22x + 15 = (
)(
)
Now, you try:
2x2 + 7x ­ 4 =
2
5.3.notebook
Quiz #20
February 25, 2015
Fully factor each of these:
1)
2)
3)
3