18 Solve the equation. If the solutions involve square roots, give both the exact and approximate solutions. 5x2-3x-7=0 What are the exact solutions? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The solution(s) do(es) not involve(s) square roots. The solution(s) is/are x= B. (Simplify your answer. Use a comma to separate answers as needed.) 3-149 3+149 The solution(s) involve(s) square roots. The solution(s) is/are x = 10 10 (Type an exact answer, using radicals as needed. Use a comma to separate answers as needed.) C. There are no real solutions. What are the approximate solutions? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The exact solution(s) involve(s) square roots. The approximate solution(s) is/are x = (Round to three decimal places as needed. Use a comma to separate answers as needed.) B. The solution(s) do(es) not involve(s) square roots, so there is no approximate solution. C. There are no real solutions.