Find the sum and product of the following quadratic equation. write your answer on a separate paper. 1. 8x 2 = 6x + 9 4. x 2 + 4x − 3 = 0 2. 4x 2 + 8x + 3 = 0 5. x 2 + 4x − 21 = 0 3. x 2 + 4x + 3 = 0