# Complex numbers

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Lessons

What are the imaginary numbers?What are the complex numbers?The complex planeAdding & subtracting complex numbersMultiplying complex numbersComplex conjugates & dividing complex numbersAbsolute value & angle of complex numbersDistance & midpoint of complex numbersPolar form of complex numbersMultiplying & dividing complex numbers in polar formChallenging complex number problemsUnit testPractice

Unit test

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Powers of the imaginary unit

4 questions

Practice

Simplify roots of negative numbers

4 questions

Practice

Practice

Plot numbers on the complex plane

4 questions

Practice

Practice

Add & subtract complex numbers

4 questions

Practice

Graphically add & subtract complex numbers

4 questions

Practice

Practice

Multiply complex numbers (basic)

4 questions

Practice

Multiply complex numbers

4 questions

Practice

Learn

Learn

Practice

Absolute value of complex numbers

4 questions

Practice

Angle of complex numbers

4 questions

Practice

Complex numbers from absolute value & angle

4 questions

Practice

Practice

Distance of complex numbers

4 questions

Practice

Midpoint of complex numbers

4 questions

Practice

Learn

Practice

Multiply & divide complex numbers in polar form

4 questions

Practice

Powers of complex numbers

4 questions

Practice

Test your understanding of

**Complex numbers**with these 15 questions.About this unit

This topic covers:
- Adding, subtracting, multiplying, & dividing complex numbers
- Complex plane
- Absolute value & angle of complex numbers
- Polar coordinates of complex numbers