serenityo90 serenityo90 29-06-2021 Mathematics contestada IM BEING TIMEDDD PLEASE HELPPPPPP Choose the correct simplification of (6x3 − 7x − 4) + (4x3 + 8x + 3). (5 points) 2x3 − 15x − 7 10x3 + x − 1 2x3 + 15x + 6 10x3 − x − 1