The problem is outlined with red. First picture is how I found the domain. The second picture is my attempt at solving the equation. I got -1 and 1. Because of the domain I concluded 1 was the only correct answer. However, turns out it's not. The are two answers 1 and -2. Where did I miss -2? Did I just miss it or is how I solved the equation entirely wrong and I just got 1 by accident?