Complex (imaginary) Numbers Part 1

I introduce complex numbers, show how i-squared is -1, show how to graph them on the argand diagram, and then go through a number of algebraic examples showing how to work with them. Part 2 of this lesson https://www.youtube.com/watch?v=eliOsy3LzAs Check out http://www.ProfRobBob.com, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage www.YouTube.com/Profrobbob