The expression $2 \sqrt{3}$ is already in its simplest form. It represents two times the square root of 3, which is an irrational number. If you'd like to approximate it as a decimal, you can calculate:

$2 \sqrt{3} \approx 2 \times 1.732 = 3.464$

So, $2 \sqrt{3} \approx 3.464$ when expressed as a decimal.

Would you like more details or have any questions?

Here are 5 related questions:

1. What is the square root of 3?
2. How can we simplify square roots?
3. What are irrational numbers?
4. Can you represent $2 \sqrt{3}$ geometrically?
5. What are some other common square roots used in math?

Tip: When working with square roots, knowing common approximations (like $\sqrt{2} \approx 1.414$ and $\sqrt{5} \approx 2.236$) can be helpful in quick calculations.