The expression in the image appears to be:

$\frac{x - 5}{\sqrt{x} - \sqrt{5}}$

Would you like to simplify this expression, or is there another operation you'd like to perform on it? Let me know if you'd like a detailed explanation or solution!

Here are 5 related questions that might expand this concept:

1. How do you rationalize a denominator involving square roots?
2. What is the limit of this expression as $x$ approaches 5?
3. Can you factor any part of this expression further?
4. How does this expression behave for large values of $x$?
5. How does this type of fraction relate to solving equations involving square roots?

Tip: When simplifying expressions with square roots, multiplying by the conjugate can help eliminate the square roots in the denominator.