1. Today’s Agenda
• Attendance / Announcements
– Exam 1 – Tuesday 9/24
• Covers Chapters 1.1 to 2.4 (skip 2.5)
• BlackBoard Resources
• Questions from HW?
• Finish Section 1.7
• Classwork / Questions

2. 1.7b Quadratic Equations
Last class, we learned how to solve
quadratics using factoring , the zero
product property, and the square
root property.

3. 1.7b Quadratic Equations
Solve….
043
2
xx
So, we’ll need another tool to
help us solve quadratics…

4. The Quadratic Formula
a
acbb
x
2
4
2

5. We have to be able
to identify a, b, c !
032
2
xx
0184
2
x
xx 41
2
61
2
3
2
xx
94x

6. The Quadratic Formula
152
2
xx
Number and type of solutions?

7. The Quadratic Formula
12123
2
xx
Number and type of solutions?

8. The Quadratic Formula
068
2
xx
Number and type of solutions?

9. The Quadratic Formula
043
2
xx
Number and type of solutions?

10. The Discriminant (p. 64)
This is a shortcut to determine what types
of solutions the quadratic has.

11. The Discriminant
a
acbb
x
2
4
2

12. Determine the types of solutions
1129
2
mm

13. Classwork / Homework*
Page 67
1 – 51 odd (skip 37)
Page 71 (Chapter 1 Review)
All that you can handle!