You've uploaded an image featuring a mathematical expression that appears to be incomplete. It shows $\sqrt{a} + \sqrt{b} =$, with the right-hand side left empty.

To proceed, I would need the complete equation or information about what you're trying to solve or achieve with this expression. For example, if you're asking if this expression can be simplified further, then the answer is that $\sqrt{a} + \sqrt{b}$ cannot be simplified further without additional information or constraints on $a$ and $b$.

Would you like to specify what you're looking for with this expression or provide any additional details? If you have questions or want further clarifications, feel free to ask!

1. What is the range of possible values for $a$ and $b$ where this expression would be real?
2. How do different values of $a$ and $b$ affect the value of this expression?
3. Can this expression be used to form a quadratic equation?
4. How can $\sqrt{a} + \sqrt{b}$ be used in geometric applications?
5. What are the implications if $a$ and $b$ are perfect squares?

Tip: When dealing with square roots, always consider the domain of the variables to ensure the expressions under the roots are non-negative.