1. 6.3 Solving Quadratic Equations by Factoring1
Terminology 2
Zero Factor Theorem 3
Methods for Solving

2. Terms Terminology Definition Example Quadratic Equation in x
An equation that can be written in the form
ax2 + bx + c =0,
where a≠0

3. Zero Factor Theorem
If p and q are algebraic expressions, then pq=0 if and only if p=0 or q=0
Example: (x+2)(2X-4)=0; x+2=0 and/or 2x-4=0
Steps
Get all variables & constants set equal to zero
Factor
Set each factor equal to zero
Solve each factor individually
CHECK YOUR ANSWER

4. Greatest Common Factor (GCF)
Look for the largest common number and/or variables in each term
Divide each term by the common terms

5. Grouping

6. Rainbow Method (2nd degree Polynomial)

7. Solving by Factoring
Solve 3x2=10-x

8. More Solving by Factoring
Solve the equation x =8x

9. Practice Problems Page 303 Problems 4-9, 14-41 Even due today
Odd due next day back