1. Solving Equations Containing Trinomials
An equation in the form …
… can be solved using two methods discussed previously.
Factoring Method
Graphing Method

2. Review of Factoring Method to Solve Equations
Move all non-zero terms to one side of the equation and simplify.
Factor the polynomial expression.
Set each factor containing a variable equal to zero.
Solve the resulting equations.

3. Example 1:
Solve the equation
Move all terms to left side
Factor
Set each factor to zero
Solve each equation.

4. Review of Graphing Method to Solve Equations
Move all non-zero terms to one side of the equation and simplify.
Put the non-zero expression into y1 on the calculator and graph.
Determine the x-intercepts.
The x-values of the x-intercepts are the solutions to the equation.

5. Example 2:
Solve the equation
Move all terms to left side
Put the expression in
for y1 and graph

6. The x-intercepts are located at (-3,0) …
… and (4,0)
The solutions are

7. Example 3:
Solve the equation
Move all terms to right side
since the quadratic term is
positive on that side
Factor
Set each factor to zero
Solve each equation.

8. Click to rerun the slideshow.
END OF PRESENTATION
Click to rerun the slideshow.