shawnsoto2005 shawnsoto2005 22-09-2022 Mathematics contestada Find the sum: (3x²+2x+3)+(x²+x+1) A. 3x² + 4x + 4 OB. 4x² + 3x+4 OC. 4x² + 4x + 4 D. 3x+3x+4 SUBMIT