## College Algebra (10th Edition)

$(x+2)(x-2)$
$x^2-4$ To factor the difference of two squares, we can refer to the general form that any difference of two squares can be written as, that is: $(x^2-a^2)=(x+a)(x-a)$ Therefore, we must write the difference of two squares as the product of the sum of the square roots of the terms and the difference of the square roots of the terms. Therefore, the answer can be written as: $(x+2)(x-2)$