First multiply 5 and 2 together
5 x 2 = 10
The numerator is 3^10
Now look at the denominator. It is 3^-2. In the even of seeing a negative number inside the exponent, flip the number from denominator to numerator, or vice versa.
1/3^-2 = 3^2
Add:
3^10 + 3^2 = 3^12
3^12, or D is your answer
hope this helps
