If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

Not feeling ready for this? Check out Get ready for Precalculus.

Learn

Practice

Powers of the imaginary unitGet 3 of 4 questions to level up!

Simplify roots of negative numbersGet 3 of 4 questions to level up!

Learn

Practice

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

Classify complex numbersGet 3 of 4 questions to level up!

Practice

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

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

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!

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 400 Mastery points

Learn

Practice

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

Multiply complex numbersGet 3 of 4 questions to level up!

Learn

Practice

Complex number conjugatesGet 3 of 4 questions to level up!

Divide complex numbersGet 3 of 4 questions to level up!

Learn

Practice

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

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

Learn

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!

Learn

Practice

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

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

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 200 Mastery points

Up next for you:#### Unit test

Level up on all the skills in this unit and collect up to 2000 Mastery points!