Watch and take Cornell Notes on the following videos:
VIDEO #1 -- Exponent Rules Intro (STOP at 8:50)
https://www.khanacademy.org/math/in-eighth-grade-math/exponents-powers-1/laws-exponents/v/exponent-rules-part-1
VIDEO #2 -- Exponent Rules Part 2 (STOP at 5 min)
https://www.khanacademy.org/math/in-eighth-grade-math/exponents-powers-1/laws-exponents/v/exponent-rules-part-2