1. The problem statement, all variables and given/known data I know that the square root of a negative number is not a real number, but I can't remember the logic that gets to that. 2. Relevant equations 3. The attempt at a solution I've read, "the square root of (-4) is not a real number because there is no real number you can square to get to -4, but I'm thinking, you can square the square root of -4 to get -4: (√-4)^2 = -4 what is the problem with this again?