1. The problem statement, all variables and given/known data solve the log x²-4x-5 on the base x-2. 2. Relevant equations I read a comment from someone that also saw the question that says: 3. The attempt at a solution If it was x²-4x+4, that would be igual (x-2)² and the answer would be 2, but I have no idea the guy got these broken numbers. Making what equal to zero? the x²-4x-5? Doesn't make sense.