Answer:
See below
Step-by-step explanation:
5^3 * 5^6 = 5^(3+6) = 5^9 <-- Add exponents when multiplying
8^7 / 8^2 = 8^(7-2) = 8^5 <-- Subtract exponents when dividing
9^7 / 9^11 = 9^(7-11) = 9^(-4) <-- Subtract exponents when dividing
(4^5)^3 = 4^(5*3) = 4^15 <-- Multiply exponents when raising a base with an exponent to an exponent
