mariabelloo3156 mariabelloo3156 16-07-2021 Mathematics contestada 3. Which equation has non-real solutions? a. 5x2 - 4x – 9 = 0 b. 2x2 - X -1 = 0 c. 6x2 + 11x + 17 = 0 d. 7x2 + 4x – 7 = 0