The table below shows examples of complex numbers, with the real and imaginary parts identified. Some people find it easier to identify the real and imaginary parts if the number is …

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

Review complex number addition, subtraction, and multiplication. ... Want to learn more about complex number operations? Check out these videos:

Welcome to the world of imaginary and complex numbers. We'll learn what imaginary and complex numbers are, how to perform arithmetic operations with them, represent them …

And the complex plane opens up a lot of interesting ways to look at complex numbers. For example, the complex number 3+4i would be represented by the point (3,4) on the complex …

Sal explains how we obtain complex numbers by adding real numbers and imaginary numbers. Created by Sal Khan.

This video is intended as a review of complex numbers. If this idea is new for you check out Sal's complex number videos in the Algebra 2 section of KA. Complex numbers, "z", have the form …

Learn how to multiply two complex numbers. For example, multiply (1+2i)⋅ (3+i). A complex number is any number that can be written as a + b i , where i is the imaginary unit and a and b …

The product of a complex number and its conjugate would create a real number. The set of real numbers includes: natural numbers, whole numbers, integers, rational numbers and irrational …

It's easier to see in a standardized form of complex numbers which is a+ib where a & b are real.