Question

if a is not equal to 0, (9^a)^2=

Answer 1

multiply 2 with a

Answer 2

Consider comparing it to something you can find out for sure to see if you can figure out the rule on your own. For example, what's (3^2)^3?

Answer 3

that example is just (3*3)*(3*3)*(3*3) so we see that's the same as 3^6=(3^2)^3 interesting.