Question

Express in simplest form with positive exponents.
[(3a^-2b^-3)/(2^-1a^4b^-4)]

Answer 1

\[(3a^{-2}b ^{-3})\div(2^{-1}a^{4}b^{-4})\]

Answer 2

use the property of exponent :
a^-m = 1/(a^m)