simplify the exponential expression hw help ?!?

Question

(-4^-2x)^-2 e^22x

Answer 1

(-4^-2x)^-2 e^22x =
(-1/4^2x)^-2 e^22x =
(4^2x)^2 e^22x =
(16^2x) e^22x =
(256^x) e^22x =
(256e^22)^x