Question

8^-2*4^3
12^0: (12^-1)^2
(3^-1)^-3

Answer 1

$8^{-2} * 4^{3} = frac{1}{8^{2} } * 4^{3} = frac{64}{64}=1; \ \ 12^{0}/ (12^{-1} )^2= frac{1}{ (frac{1}{12})^2} = 12^{2} = 144; \ \ ( 3^{-1} )^{-3} = 3^{-1*(-3)} = 3^{3} =27.$