The expression in the image is:

$\frac{2a^2 - 8}{2a - 4}$

You are likely being asked to simplify this expression.

Step-by-step simplification:

1. Factor the numerator $2a^2 - 8$: $2a^2 - 8 = 2(a^2 - 4) = 2(a - 2)(a + 2)$ This is a difference of squares.

2. Factor the denominator $2a - 4$: $2a - 4 = 2(a - 2)$

3. Now rewrite the expression: $\frac{2(a - 2)(a + 2)}{2(a - 2)}$

4. Cancel out the common terms $2(a - 2)$ from both numerator and denominator: $a + 2$

Thus, the simplified expression is:

$a + 2$

Final Answer: $a + 2$

Would you like further clarification on this, or do you have any questions?

Here are five related questions for practice:

1. What is the general rule for factoring differences of squares?
2. How would you simplify $\frac{x^2 - 9}{x - 3}$?
3. What happens when a numerator or denominator cannot be factored?
4. How can you check if your simplified expression is correct?
5. What is the difference between factoring and simplifying?

Tip: Always look for common factors to cancel out when simplifying rational expressions!