More about simplifying exponential expressions
Rational Exponents (Learning Target 8)
http://psn.virtualnerd.com/viewtutorial/Alg2_07_02_0015
Dividing Powers with the Same Base (Learning Target 6)
http://psn.virtualnerd.com/viewtutorial/Alg1_6_2_6
Multiplying Powers with the Same Base (Learning Target 5)
video 1: http://psn.virtualnerd.com/viewtutorial/Alg1_6_2_1
video 2: http://psn.virtualnerd.com/viewtutorial/Alg1_06_01_0042
