Respuesta :

1/n^2 and n^-2 are the same, and 16 and 1/16 definitely aren’t the same 4^-2 is just -4 * -4, and because negative * negative = positive, that adds up to being 16.

The answer is 1/16.
if the last answer is n^-2 then the last answer and answer 3 arent equivalent