Mark DugopolskiElementary Algebra

Edition 3

Chapter 9Quadratic Equations and

Quadratic Functions

Copyright © 2000 by the McGraw-Hill Companies, Inc.

Quadratic Equation

9-1Page 454

Strategy for Solving Quadratic Equations by Factoring

9-2Page 455

Finding the Last Term

9-3Page 460

The Strategy for Solving a Quadratic Equation by Completing the Square

9-4Page 461

Figure 9.1

9-5Page 463 (Figure 9.1)

The Quadratic Formula

9-6Page 467

Table 9.1

9-7Page 469 (Table 9.1)

Solving the Quadratic Equationax + bx + c = 0

9-8Page 470

2

Complex Numbers

9-9Page 477

Figure 9.3

9-10Page 477 (Figure 9.3)

Addition and Subtraction of Complex Numbers

9-11Page 478

Multiplication ofComplex Numbers

9-12Page 478

Complex Conjugates

9-13Page 479

Dividing by a Complex Number

9-14Page 480

Square Root of aNegative Number

9-15Page 481

Complex Numbers

9-16Page 482

Quadratic Function

9-17Page 485