Complex Numbers

1
Complex Numbers

• Section 2.1

2
Objectives

• Rewrite the square root of a negative number as a
  complex number.
• Write the complex conjugate of a complex number.
• Add, subtract, multiply, and divide two complex
  numbers.
• Solve a quadratic equation with complex
  solutions.

3
Vocabulary

• complex number
• complex conjugate

4
Rewrite the following square root so that there
is no longer a negative sign under the square
root symbol.
5
Rewrite the following square root so that there
is no longer a negative sign under the square
root symbol.
6
Rewrite the following square root so that there
is no longer a negative sign under the square
root symbol.
7
Evaluate the expression
8
Evaluate the expression
9
Multiply the following two numbers together.
10
Find the complex conjugate of each of the
following
11
Multiply the following two numbers together.
12
Evaluate the expression
13
Solve the equation
14
Solve the equation
15
Solve the equation