Complex Numbers
Watch the lesson on mathtv.com. Click the play button in the lower left corner of the video lesson screen. It requires Real Player, a free download.
Taft College provides this video that also requires Real Player.
The College of Southern Idaho provides videos that require Windows
Media Player 6.0 or higher, a
free download.
Imaginary
and Complex, Adding and Subtracting.
Multiplying
and Conjugating Complex Numbers.
Dividing
Complex Numbers, Principal Roots, and a warning about the product rule.
David Joyce at Clark University has an online introduction to complex numbers.