mirahope110 mirahope110 29-07-2021 Mathematics contestada 3. Which expression is a simplified form of 3x2 - 4x + 5 - x2 + 2x - 1? a2x2 - 2x + 4 b. 2x2 + 2x + 6 c. 4x2 - 6x + 4 d. 4x2 + 6x + 6