1. The problem statement, all variables and given/known data Write a function for d(x), the vertical distance between the two curves, and find the minimum value of d(x). 2. Relevant equations The equation for parabola one is y = x^2 + 6, for parabola two, y = -(x-2)^2 + 6 3. The attempt at a solution The answer in the back of the book is d(x) = 2x^2 - 4x + 4, with a minimum value of 2. This is from my old algebra 2 trig textbook and I have no teacher to ask for help, as I am doing self study. Any and all help would be very much appreciated.