1 + 1 is 2.

Do you want details or have any questions? Here are some other questions you might be interested in asking:

1. What is the derivative of $x^2$?
2. How do you solve a quadratic equation?
3. What is the integral of $\sin(x)$?
4. Can you explain the Pythagorean theorem?
5. How do you find the limit of a function as $x$ approaches a value?

Tip: When solving math problems, always double-check your work to ensure accuracy.