### Home > A2C > Chapter 12 > Lesson 12.1.1 > Problem 12-24

12-24.

Start by factoring out 2.

Guess and use a generic rectangle to check other factors.

Notice that this is a difference of squares:

(4*x*^{2})^{2} − (1)^{2}

12-24.

Start by factoring out 2.

Guess and use a generic rectangle to check other factors.

Notice that this is a difference of squares:

(4*x*^{2})^{2} − (1)^{2}