First,, you need to simplify the radical in the first parenthesis.
(6) × (3)
Now simplify the radical in the second parenthesis.
(6) × (12)
Then remove the parenthesis.
6 × 12
Now calculate the product to find your answer.
72
This means that the correct answer to your question is going to be 72.
Let me know if you have any further questions.
:)