Simplify expressions with positive exponents only.[br]For video explanation of the topic, go to[br][url]https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-arithmetic-operations/cc-6th-exponents/v/introduction-to-exponents[/url][br]or [url]http://patrickjmt.com/exponents-applying-the-rules-of-exponents-basic-ex-1/[/url][br]or [url]http://patrickjmt.com/exponents-applying-the-rules-of-exponents-basic-ex-2/[/url][br]or [url]http://patrickjmt.com/applying-the-rules-of-exponents-basic-examples-3/[/url][br]or [url]http://patrickjmt.com/exponents-applying-the-rules-of-exponents-basic-ex-3/[/url]