Simplify. Do not use negative exponents in the answer. -25a^-2/10b^-4

HAVING A HARD TIME WITH THIS ONE!! i KNOW YOU REVERSE THE LETTERS AND THE NEGATIVE POWERS ARE TURNED INTO POSITIVE AND RECIPROCATED BUT THE -24/10 I CANT FIGURE OUT FROM THE EXAMPLE I WAS GIVEN. PLEASE HELP!!

1 answer

(-25/10)(1/A^2)( B^4)

-25 B^4/(10 A^2)