Final answer:
The Highest Common Factor of the expressions (x^2 - 4), (x^3 + 8), and (x + 2)^2 by factorization is (x + 2).
Step-by-step explanation:
To find the Highest Common Factor (HCF) by factorization method of the given expressions: (x^2 - 4), (x^3 + 8), and (x + 2)^2, we need to factor each expression.
- For (x^2 - 4), this is a difference of squares and can be factored as (x + 2)(x - 2).
- The expression (x^3 + 8) can be factored as a sum of cubes: (x + 2)(x^2 - 2x + 4).
- Finally, (x + 2)^2 is already in factored form.
The common factor in all three expressions is (x + 2). Hence, the HCF is (x + 2).