Answer:
Step-by-step explanation:
in negative exponents you should switch both numerator and denominator so for 2 raised to -1 you should switch the numerator and denominator and it will become 1/2 in which 2 is raised to power 1
you can do the same for the remining sums
so a is 1/2 in which 2 is raised to 6 so answer is 1/64
