1. Quadratic Formula

2. https://www.youtube.com/watch?v=ZBVYahon6EY

3. Pre-req's for this lesson:
- "plug it in"
- identify coefficients
- simplify radicals
- add/subtract
- memorize a long formula!

4. Objective: use the quadratic formula to find x!
x + 7x + 12
2

5. x + 7x + 12
2
STEP 1: identify coefficients:
a=_____ b=_____ c=_____
STEP 2: plug it into the formula!
-b ± b - 4ac
2
2a

6. a=1 b=7 c=12
-b ± b - 4ac
2
2a

7. Try it on your own! **find x using the Q.F.
x - 6x + 7
2

8. Try it on your own! **find x using the Q.F.
x - 4x + 6
2