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# Unit: Complex numbers

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#### 0

Possible mastery points

## What are the complex numbers?

Practice
Parts of complex numbersGet 3 of 4 questions to level up!
Classify complex numbersGet 3 of 4 questions to level up!

## The complex plane

Practice
Plot numbers on the complex planeGet 3 of 4 questions to level up!

#### Quiz 1

Level up on the above skills and collect up to 500 Mastery points

## Adding and subtracting complex numbers

Practice
Add & subtract complex numbersGet 3 of 4 questions to level up!
Graphically add & subtract complex numbers Get 3 of 4 questions to level up!

## Distance and midpoint of complex numbers

Practice
Distance of complex numbersGet 3 of 4 questions to level up!
Midpoint of complex numbersGet 3 of 4 questions to level up!

#### Quiz 2

Level up on the above skills and collect up to 400 Mastery points

## Multiplying complex numbers

Practice
Multiply complex numbers (basic)Get 3 of 4 questions to level up!
Multiply complex numbersGet 3 of 4 questions to level up!

## Complex conjugates and dividing complex numbers

Practice
Complex number conjugatesGet 3 of 4 questions to level up!
Divide complex numbersGet 3 of 4 questions to level up!

## Identities with complex numbers

Practice
Factor polynomials: complex numbersGet 3 of 4 questions to level up!

#### Quiz 3

Level up on the above skills and collect up to 500 Mastery points

## Absolute value and angle of complex numbers

Practice
Absolute value of complex numbersGet 3 of 4 questions to level up!
Angle of complex numbersGet 3 of 4 questions to level up!
Complex numbers from absolute value & angleGet 3 of 4 questions to level up!

## Polar form of complex numbers

Practice
Polar & rectangular forms of complex numbersGet 3 of 4 questions to level up!

#### Quiz 4

Level up on the above skills and collect up to 400 Mastery points

## Multiplying and dividing complex numbers in polar form

#### Quiz 5

Level up on the above skills and collect up to 200 Mastery points
Up next for you:

#### Unit test

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### About this unit

In Algebra 2, students were introduced to the complex numbers and performed basic operations with them. In this unit, we extend this concept and perform more sophisticated operations, like dividing complex numbers. We also learn about a different way to represent complex numbers—polar form.