1. Warm up Factor Completely 5x2 – 13x + 6 x2 – 9y2 3) y2 + 2y – 48
Solve…
4) 2(x – 5) + 5x = 3 – 6x

2. Solving Quadratic Equations by Factoring

3. To solve a quadratic eqn
To solve a quadratic eqn. by factoring, you must remember your factoring patterns!

4. Solving or Finding the Zeros of an equation
Zero Product Property
Let A and B be real numbers or algebraic expressions. If AB=0, then A=0 or B=0.
This means that If the product of 2 factors is zero, then at least one of the 2 factors had to be zero itself!
Solving or Finding the Zeros of an equation
The zeros of an equation are the solutions/roots/x-intercepts.
First, set equal to zero, or if it is an equation in standard form then change y to a 0. Now, solve for x.
The solutions will be the zeros of the equation.

5. Example: Solve. x2+3x-18=0

6. Example: Solve. 2t2-17t+45=3t-5

7. Example: Solve. 3x-6=x2-10

8. Example: Find the Zeros of y=x2-x-6
If you were to graph the eqn., the graph would cross the x-axis at (-2,0) and (3,0).

9. You Try!
Solve:
{3/2, 5}
{0, 1/2}

10. Homework 1-4 (Odds) ******************************
Tutorials
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