Which expression is equivalent to 3^-3 x 3^-3 ?

Question

1. 9^-6
2. 3^9
3. 3^-6
4. 9^9

Answer 1

To solve this problem, we can combine the exponents when multiplying like bases.

In this case, we have 3^-3 x 3^-3, which can be rewritten as (3 x 3)^-3.

This simplifies to 3^-6, which is equivalent to option 3.

Therefore, the correct answer is 3^-6.