Section 1.4 Complex Numbers: Quadratic Equations with Complex Solutions

Before Starting this Section, Review

  1. 1 Properties of real numbers (Section P.1 , page 12)

  2. 2 Special products (Section P.3 , pages 34 and 37)

  3. 3 Factoring (Section P.4 )

Objectives

  1. 1 Define complex numbers.

  2. 2 Add and subtract complex numbers.

  3. 3 Multiply complex numbers.

  4. 4 Divide complex numbers.

  5. 5 Solve quadratic equations having complex solutions.

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In the early days of the study of alternate current (AC) circuits, scientists concluded that AC circuits were somehow different from the battery-powered direct current (DC) circuits. However, both ...

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