### Home > A2C > Chapter 12 > Lesson 12.1.3 > Problem 12-54

12-54.

Solve and check for extraneous solutions. Homework Help ✎

Get the radical by itself and square both sides.

*x* + 18 = *x*^{2} + 4*x* + 4

Solve by factoring or using the quadratic formula. Remember to check your answers with the original equation.