Algebra II: Multiply Complex Numbers

The Khan Academy video below explains how to multiply complex numbers:

Algebra II: Adding and Subtracting Complex Numbers

The Khan Academy video below explains how to add complex numbers:

The Khan Academy video below shows you how to subtract complex numbers:

Algebra II: Find Absolute Value of Complex Numbers

The Khan Academy video below explains how to find the absolute value of complex numbers:

Algebra II: Plotting Complex Numbers on Complex Plane

The Khan Academy video below will help you learn how to plot complex numbers on the complex plane:

Algebra II: Adding and Subtracting Radicals

The video below by Khan Academy shows you how to add like radicals:

Watch the video below from Mathgirl915 to learn how to add radicals that aren't alike:

Algebra II: Simplifying Radicals

The videos below will help you understand how to simplify radicals:

An introduction from Khan Academy to help you understand how to simplify square roots:

This next video from Khan Academy explains how to simplify cube roots