how do you simplify the square root of 18?

To simplify the square root of 18, you can break down 18 into its factors and identify any perfect square factors.

The factors of 18 are 1, 2, 3, 6, 9, and 18.
Since none of these factors are perfect squares, there is no simple way to simplify the square root of 18. Therefore, the simplified square root of 18 remains as √18.