Add Yahoo as a preferred source to see more of our stories on Google. Imaginary numbers push the boundaries of calculus and other branches of math. Hill Street Studios/DigitalVision via Getty Images ...

In this math tutorial, I will show you how to multiply complex numbers. Complex numbers come in the form of a + bi.

To a nonmathematician, having the letter “i” represent a number that does not quite exist and is “imaginary” can be hard to ...