### Home > CCA2 > Chapter 12 > Lesson 12.1.1 > Problem 12-19

12-19.

Solve each equation. Homework Help ✎

+ 5 = *x*

Subtract 5 from both sides to isolate the radical.

Square both sides to get rid of the radical sign.

Set the equation equal to 0 and usethe Quadratic Formula to solve for x.

What are the factors of *a*^{2} − 36? Multiply both sides of the equation by a common denominator to remove the fractions.

*a* = −9