Answer
$(2x + 1)(2x - 1)$
Work Step by Step
To factor the difference of two squares, we use the formula:
$$A^2 - B^2 = (A + B)(A - B)$$
For this binomial, we take the square root of the leading coefficient to get $A = 2$ and the square root of the constant to get $B = 1$.
So we now plug these two values into the formula for factoring the binomial:
$(2x + 1)(2x - 1)$