Khan Academy Static

Evaluate exponential expressions with negative bases, use odd and even rules to determine the sign of an exponential expression, and learn about powers of 1 and 0.

851_Sign_of_expressions_challenge_problems.html

847_Exponents_with_negative_bases.html

850_1_and_1_to_different_powers.html

848_The_0_1st_power.html

852_Powers_of_zero.html

849_Even_odd_numbers_of_negatives.html