# Multiplying Complex Numbers

How to multiply complex numbers (numbers with i)

0:20 (-4)^i  After multiplying the complex numbers you then use the patterns of i

0:35 This problem involves multiplying two complex numbers together.

(9-7i)(-6-5i)

This problem is like a polynomial in which you foil the problem.

1:47 This problem involves dividing complex numbers.

4+i/5^i

Remember you can have -i which is a radical in the denominator,therefore you get of i by multiplying by -i

3:30 This problem involves a full complex number and you have to multiply by a conjugate.

At MooMooMath we provide helpful Math and Geometry videos to help you figure out how to solve Math problems or review old Math concepts you may need to refresh. If you’re a Math student or teacher, we'd love to have you subscribe and join us!

* Subscribe

http://bit.ly/1d8EvIu

Let’s connect

MooMooMath

http://www.moomoomath.com/

* Google+

https://plus.google.com/u/0/+MooMooMath

* Pinterest

https://www.pinterest.com/moomoomath/

Twitter

https://twitter.com/MooMooMath

Back to Top