Simplifying Square Roots (Radicals) with Variables

I explain how to simplify square roots that involve variables when those variables represent all real numbers. There is an annotation correction for the last question that you will not see if using an iPad. I should have wrote Square Root(3Y)....I forgot the 3 Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob