Add, Subtract, and Multiply Complex Numbers

Section 1.5
Complex Numbers
Day 1 (Introduction)

Students will be able to add, subtract, multiply, and divide complex numbers to later find complex solutions for quadratic equations.

​Objective:

Complex Numbers

Powers of i

Powers of i

Multiple Choice

Simplify the expression:

$$i^{145}$$

• 1

• $$i$$

• -1

• $$-i$$

​Examples of complex numbers:

Multiple Choice

What is the real part of the number $$4+2i$$

• 4

• 2

• -4

• 2i

Multiple Choice

What is the imaginary part of the number $$6$$

• 6

• 1

• i

• 0