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# Unit 3: Complex numbers

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## About this unit

Let's build off of our previous work with complex numbers and perform more sophisticated operations, like division. We'll also learn about a different and more visual way to represent complex numbers—polar form.

### Practice

- Plot numbers on the complex planeGet 3 of 4 questions to level up!
- Graphically add & subtract complex numbers Get 3 of 4 questions to level up!

### Practice

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

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

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

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Modulus (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!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Complex plane and polar formGet 3 of 4 questions to level up!
- Polar & rectangular forms of complex numbersGet 3 of 4 questions to level up!

### Learn

### Practice

- Multiply & divide complex numbers in polar formGet 3 of 4 questions to level up!
- Powers of complex numbersGet 3 of 4 questions to level up!

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

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Level up on all the skills in this unit and collect up to 1,500 Mastery points!