or the following, find the discriminant, b2-4ac, and then determine whether one real-number solution, two different real-number solutions, or two different imaginary numb olutions exist. x+3x+7=0 What is the discriminant, b2-4ac? -19 (Simplify your answer.) "What is the nature of the solution(s)? OA. There are two different real-number solutions. OB. There are two different imaginary-number solutions. OC. There is one real-number solution.