To simplify the expression $\frac{x^2}{x} + 5$, follow these steps:

1. Simplify the fraction $\frac{x^2}{x}$. Since $x^2 = x \cdot x$, this can be simplified as:

   $\frac{x^2}{x} = x$

2. Now, substitute this back into the original expression:

   $x + 5$

So, the simplified expression is:

$x + 5$

Would you like a more detailed explanation or have any questions?

Here are 5 related questions:

1. How do you simplify fractions involving variables?
2. What happens if $x = 0$ in this expression?
3. How do you simplify expressions with higher powers of $x$?
4. Can you factor $x^2 + 5x$?
5. What is the domain of this simplified expression?

Tip: Always check if any variable expressions lead to undefined results by considering potential restrictions on the variable (e.g., division by zero).