Question 709635
To convert this into positive exponents, first, flip the numerator and denominator, then take the 4th power of the numerator AND the denominator:


{{{(a/2)^-4}}} = 


{{{(2/a)^4}}} =


{{{(2^4)/(a^4)}}} =


{{{16/a^4}}} <----- final answer, simplified with a positive exponent