Final answer:
To write 18√6 in simplest form, we need to simplify the square root of 6. The square root of 6 is not a perfect square, so it cannot be simplified further. Therefore, the answer is option c) √318.
Step-by-step explanation:
To write 18√6 in simplest form, we need to simplify the square root of 6. The square root of 6 is not a perfect square, so it cannot be simplified further. Therefore, 18√6 is already in simplest form. The answer is option c) √318.