The expression provided in the image is:

$\sqrt{x^2 + 3x + 4} - x$

Would you like to simplify this, find its domain, or perform some other operation on it? Let me know your goals with this expression.

Here are some related questions for further exploration:

1. Would you like to calculate the derivative of this expression?
2. Should we evaluate this expression for a specific value of $x$?
3. Do you want to solve for $x$ where this expression equals zero?
4. Should we explore the behavior of this function as $x$ approaches positive or negative infinity?
5. Would you like to analyze the domain and range of this function?

Tip: To determine the domain of a square root expression, ensure that the radicand (the part under the square root) is non-negative.