The square root of 128 can be simplified as follows:

$\sqrt{128} = \sqrt{64 \times 2} = \sqrt{64} \times \sqrt{2} = 8\sqrt{2}$

So, the simplified form of $\sqrt{128}$ is:

$8\sqrt{2}$

Would you like a detailed explanation on how to simplify square roots?

Here are 5 related questions:

1. What is $\sqrt{50}$ in simplified form?
2. How do you simplify $\sqrt{200}$?
3. What is $\sqrt{72}$?
4. Can you simplify $\sqrt{18}$?
5. How do you solve $\sqrt{32}$?

Tip: When simplifying square roots, always look for perfect squares that are factors of the number under the root.