Simplifying expressions with square roots.[br][br]For video explanation see[br][url]https://www.khanacademy.org/math/algebra/exponent-equations/simplifying-radical-expressions/v/radical-equivalent-to-rational-exponents-2[/url][br]or [url]http://patrickjmt.com/radical-notation-and-simplifying-radicals/[/url][br]or [url]http://patrickjmt.com/radicals-simplifying-radical-expressions-involving-variables-ex-1/ [/url](I can't use variables with GeoGebra for simplifying with variables).