# Section 2.7-2.8: Complex Numbers

**Section 2.7-2.8 Textbook: Complex Numbers**

Section 2.7-2.8 Textbook: Complex Numbers

Section 2.7

Section 2.8

**Learning Objectives**

- Write square roots with negative radicands in terms of i
- Recognize and write complex numbers in standard form
- Describe the relationship between the sets of integers, rational numbers, real numbers and complex
- numbers
- Add and subtract complex numbers
- Find the complex conjugate of a complex number
- Multiply and divide complex numbers
- Use your calculator to add, subtract, multiply, and divide complex numbers

**Section 2.7-2.8 Videos**

**Video Lessons**

**Video Examples**

- Ex : Simplify Imaginary and Complex Numbers
- Ex: Simplify, Add, and Subtract Imaginary and Complex Numbers
- Ex 1: Adding and Subtracting Complex Numbers
- Ex 2: Adding and Subtracting Complex Numbers
- Ex 1: Simplify and Multiply Complex Numbers
- Ex 2: Multiply Complex Numbers
- Ex 3: Multiply Complex Numbers
- Ex: Multiplying Complex Conjugates
- Ex: Raising the imaginary unit i to powers
- Ex: Dividing Complex Numbers

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