## College Algebra (10th Edition)

$(5x+2)(5x-2)$
$25x^2-4$ 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, the answer can be written as: $(5x+2)(5x-2)$