# Introduction to complex numbers

Contents

Learn about complex numbers and how to add, subtract, and multiply them. This will come in useful when working with polynomials.

9 exercises available

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
# Introduction to complex numbers

Contents

Learn about complex numbers and how to add, subtract, and multiply them. This will come in useful when working with polynomials.

9 exercises available