Question

Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.
(4xy ^– 2)^– 2

Answer 1

= 1/16 *x^ -2 y^(-2*-2)
=[ (1/16) y^4 ] / x^2
or
y^4
-----
16 x^2