### Home > A2C > Chapter 12 > Lesson 12.4.2 > Problem 12-185

12-185.

(2*x* + 1)(2*x* − 1) = 4*x*^{2} − 1

Multiply both sides by the least common multiple and simplify.

Set the equation equal to zero and factor, then you can use the Zero Product Property.

*x* = 2 or *x* = −1