Going through the problems I came across: How many roots does the following equation have? |x^2 - 11| = |x-8|
After initially figuring out the answer, I came up with 4. It said I was wrong, there were 2?
I spent the next 3 hours trying to try different ways and establish how they came out with the answer 2... I still can't, I'm sure that the answer is 4!
Am I completely missing something?