The question is asking for the number form of this equation. Let's break it down in order.
Given: 3a squared cubed over 9
3a(3a) squared(3a^2) cubed ((3a^2)^3) over 9((3a^2)^3/9)
Written: ((3a^2)^3)/9
Answer: ((3a^2)^3)/9
The parenthesis around the 3a^2 means to do that first. The parenthesis around (3a^2)^3 is to show to divide the whole entire number by nine. If you have any other questions, let me know! I will try to help any way I can :)