annellecrosby12 annellecrosby12 21-01-2020 Mathematics contestada Simplify by combining like terms. 3r + n2 - r + 5 - 2n + 2 Group of answer choices a)2r + n2 - 2n +7 b)2r + 3n2 - 2 c)4r + 3n2 + 7