sabekmarium10 sabekmarium10 30-03-2020 Mathematics contestada the sum of 3x2 + x - 7 and x2 + 10 can be expressed as? A. 4x4 + x - 3 B. 3x2 + x + 3 C. 3x4 + x - 3 D. 4x2 + x + 3