12 videos in "Simplifying Complex Expressions"

Complex Numbers 2

Complex Numbers 3

Complex Numbers 7

Complex Numbers 8

Simplifying Complex Numbers

Simplifying Imaginary Numbers

Simplifying Complex Numbers

Simplifying Rational Expression with Imaginary Number

Simplifying with Imaginary Numbers in the Denominator

Simplifying Rational Expressions with Complex Conjugate Denominators

Simplifying a Complex Expression

Simplifying Powers of i
Complex Numbers 2
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
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Several examples are provided, showing how to simplify square roots of negative numbers, and multiply and divide with imaginary and complex numbers.
 What is a complex number?
 How do you compute square roots of negative numbers?
 What is the square root of 50?
 What is 5*sqrt(45)?
 What is 6*(square root of 9)?
 What is sqrt(11)*sqrt(11)?
 What is the square root of 41 times the square root of 41?
 What is the square root of 2 times the square root of 8?
 What is the square root of 6 times the square root of 10?
 What is the square root of 18 divided by the square root of 2?
 What is the square root of 1?
 Why isn't the square root of a negative times the square root of a negative equal to a positive?
This video shows a bunch of example problems for simplifying square roots of negative numbers that are multiplied or divided. The steps involved in simplifying these expressions are explained very well. This is a great way to try out the complex number skills that you have just learned.