Question

How do I simplify the expression 7ab to the -2 power over 3w?

Answer 1

Assuming you mean$\frac{7ab^{-2}}{3w}$
reember
(ab)/c=(a/c)b
also
$x^{-m}= \frac{1}{x^m}$

so
$\frac{7ab^{-2}}{3w}$=
$( \frac{7a}{3w})(b^{-2})$=
$( \frac{7a}{3w})(\frac{1}{b^2})$=
$\frac{7a}{3wb^2}$