1. The problem statement, all variables and given/known data x^2-6 = sqrt(x+6) Solve for x. Answer is x=3 3. The attempt at a solution I've tried factorizing, but with no luck. I can get it down to: x^4 - 12x^2 - x + 30 = 0, but thinking back to my high school days, I'm sure there's an easier way to solve this question - just can't seem to remember how. Any help?