1. Sec. 1.4
Quadratic Equations

2. Quadratic Equation in general form
ax2 + bx + c = 0
Also called a 2nd degree polynomial

3. Method in this section for solving
Factoring
Extracting square roots
Completing the square
Quadratic formula

4. Zero Factor Property
If ab = 0
then a = 0 or b = 0

5. To use this Factor the left side of ax2 + bx + c = 0
Then set each linear factor equal to 0 and solve

6. Factoring
Ex. 1
A) 2x2 + 9x + 7 = 3
B) 6x2 – 3x = 0

7. Extracting Square Roots
For u2 = d
when d > 0
u is an alg. expression

8. So for u2 = d
U = ± √d

9. EX 2
A) 4x2 = 12
B) (x-3)2 = 7