Question

Which expression is equivalent to 4 start root 81/16 a^8 b^16 c^16?

Answer 1

answer a is equivalent

Answer 2

fourth root of 81 = 3
fourth root of 16 = 2
so it must be one of the ones with 3/2 in front.

you would divide all of the exponents by whatever the root is, in this case 4.
8/4 = 2
12/4 = 3
16/4 = 4

answer is A