1. SEC. 9-5: Factoring Trinomials of Type: x2 + bx + c

2. ***You need to find factors of 12 that add to 7. (3 and 4 work)
The strategy to factoring these types of problems is often called sit & stare.
You need to find FACTORS of the constant term so that they add to the LINEAR term.
i.e.
X2 + 7x + 12
***You need to find factors of 12 that add to 7. (3 and 4 work)
(x + 3)(x + 4)

3. Try: y2 - y - 6 You need factors of -6 that add to -1. -3 & 2 work so
Try: y2 - y - 6 You need factors of -6 that add to & 2 work so... (y - 3)(y + 2) Do: c2 + 6x + 9 Unfortunately, the only way to get good at these is by practicing!