The expression $ab(a - b)$ can be expanded using the distributive property. Here's how:

$ab(a - b) = ab \cdot a - ab \cdot b$

Now, simplify each term:

$ab \cdot a = a^2b$ $ab \cdot b = ab^2$

So, the expanded form is:

$ab(a - b) = a^2b - ab^2$

Would you like more details or have any questions?

Here are five related questions:

1. How would you expand the expression $a(b - c)(c - d)$?
2. What is the expanded form of $(a + b)(a - b)$?
3. How would you factor the expression $a^2b - ab^2$ back into its original form?
4. What is the difference between factoring and expanding in algebra?
5. How would you simplify the expression $ab(a - b) + b(a - b)$?

Tip: When expanding expressions, always apply the distributive property carefully to ensure that each term is correctly multiplied.