The expression you provided is:

$\sqrt{5x} - 2 + 12$

To simplify this:

$\sqrt{5x} - 2 + 12 = \sqrt{5x} + 10$

This is the simplified form of the expression.

Would you like more details or have any specific questions?

Here are 5 related questions you could explore:

1. How do you solve equations involving square roots like $\sqrt{5x}$?
2. What happens if $x$ is negative inside the square root?
3. Can you graph the expression $\sqrt{5x} + 10$?
4. How do you solve $\sqrt{5x} + 10 = 0$ for $x$?
5. What is the domain of the function $\sqrt{5x} + 10$?

Tip: Always check the domain of square root functions—only non-negative numbers are allowed inside the square root.