#### Answer

x = -12

#### Work Step by Step

1. To find all the real solutions of this function, first we must factor this function completely.
2. Factoring this function gives us (x + 12)(x + 12) = 0.
3. Since both terms are the same, just set either term equal to 0.
4. x + 12 = 0, solving for x gives us x = -12.