(1 point) The differential equation dy = 30 + 25x + 18y + 15 xy dx has an implicit general solution of the form F(x, y) = K, where K is an arbitrary constant. In fact, because the differential equation is separable, we can define the solution curve implicitly by a function in the form F(x, y) = G(x) + H(y) = K. Find such a solution and then give the related functions requested. F(x, y) = G(x) + H(y) =