1. Do Now: Get your homework and green sheet out for Ms. Taylor to stamp.
Factor the following:
k2 – 4k + 3
m2 – 2m – 48

2. Homework 

3. Factoring
when a ≠ 1

4. Recall Standard form
ax2 + bx + c All the examples we have been doing with factoring, a = 1. However this is not always the case. When there is a coefficient on the x2 term, and a GCF cannot be taken out, we have to factor a bit differently.

5. Wrong/Right Steps: Pull out a GCF of the whole trinomial
Write the trinomial as two binomials with the “a” term as the coefficient
Multiply the “a” term and the “c” term.
See what multiples to “ac” and adds to the “b” term
Write in the binomials
This is WRONG
We have to make it right by reducing by the GCF, if no GCF, we rewrite
This is the RIGHT answer!

6. 3y2 + 14y + 8 W - ( 3y + 2 ) ( 3y + 12 ) R - ( 3y + 2 ) (y + 4 )
ac = 3*8 = 24
*24
+14
1*24 25
2*12 14
3*8 11
4*6 10
W - ( 3y ) ( 3y )
R - ( 3y ) (y )

7. 2y2 – 7y - 15

8. 5b2 + 24b - 5

9. Try some examples on your own…
5c2 + 2c - 16
11a2 + 35a + 6

10. 3x2 + 4x + 1
3c2 – 2c - 21

11. 9y2 – 5y - 4
7m2 – 30m + 27

12. 2x2 – 17x + 36
5h2 + 12h + 4

13. Homework…
9-4: Skills Practice (back of last night's HW)
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