To determine which expressions can be factored using the difference of two squares, recall the standard form:

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

Key criteria for factoring using the difference of squares:

1. The expression must be a subtraction (difference), not addition.
2. Both terms must be perfect squares (i.e., squares of whole numbers).

If you provide the specific expressions, I can analyze each one to see if they meet these criteria.

Would you like to list the expressions, or upload an image with them?

5 Related Questions:

1. What are common examples of perfect squares?
2. How do you factor a sum of squares if it’s possible?
3. Can the difference of squares apply to polynomials with more than two terms?
4. What happens if one term is not a perfect square?
5. How is the difference of squares related to quadratic equations?

Tip: Always check for a greatest common factor (GCF) before applying the difference of squares—it can simplify the factoring process.