In this lesson on complex numbers, we learn how to simplify square roots of negative numbers, and multiply and divide with imaginary and complex numbers. We are reminded of the definitions of i and the rules for simplifying square roots, including rewriting them in the form BI. The lesson also emphasizes the importance of not leaving negative numbers under the square root sign and rewriting them as the square root of a positive number times i. The video provides several examples to help reinforce these concepts.
Several examples are provided, showing how to simplify square roots of negative numbers, and multiply and divide with imaginary and complex numbers.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com