1. The problem statement, all variables and given/known data http://alphacapitalist.com/wp-content/uploads/2012/06/factoringproblem.jpg [Broken] 2. Relevant equations / 3. The attempt at a solution I tried factoring this but it seems to me that author has made an error somewhere. Either solution to this problem is not 1/a-1 or there is error in the problem itself. Why? Well i tried putting a=2 and using author's solution i should get 1 but when i put it in the problem get 1.714. Any thoughts?