The expression given is:

$10(x + 10)$

To simplify this, apply the distributive property:

$10(x + 10) = 10 \cdot x + 10 \cdot 10$

This simplifies to:

$10x + 100$

So, the simplified form of the expression is:

$10x + 100$

Would you like more details or have any further questions?

Here are 5 related questions:

1. How would you simplify $5(x + 7)$?
2. What is the value of $10(x + 10)$ when $x = 2$?
3. How does the distributive property work with negative numbers, like $-3(x - 5)$?
4. Can you solve $10(x + 10) = 200$ for $x$?
5. What happens if we apply the distributive property to $2(x + y + z)$?

Tip: The distributive property is a key tool in simplifying algebraic expressions and helps in expanding or factoring them.