4)
(5^(-2))^(-1) = 5^(2) = 25
5)
8^(-2) 4^3 = (1/8^2) 4^3 = 1/64 * 64 = 1
6)
10^0 / 10^(-3) = 1 / (1/10^3) = 1 / (1/1000) = 1000
7)
10^8 10^(-5) 10^(-4) = 10^(8-5-4) = 10^(-1) = 0.1
4)
(5^(-2))^(-1) = 5^(2) = 25
5)
8^(-2) 4^3 = (1/8^2) 4^3 = 1/64 * 64 = 1
6)
10^0 / 10^(-3) = 1 / (1/10^3) = 1 / (1/1000) = 1000
7)
10^8 10^(-5) 10^(-4) = 10^(8-5-4) = 10^(-1) = 0.1