Let f and g be the functions defined by f(x) = 1 + x + e^x^2 - 2x and g(x) = x^4 - 6.5x^2 + 6x + 2. There are two regions on the interval 0 x 2 which are enclosed / and g. Find the sum of the areas of the enclosed regions. Let h be the vertical distance between the graphs of f and g on 0 x 2. Find the rate at which h changes with respect to x when x = 1.8 .