ella1781 ella1781 18-10-2022 Mathematics contestada 4. The sum of 4x3 +6x²+2x-3 and 3x³ +3x²-5x-5 is A. 7x² + 3x²-3x C. 7x³ +9x²-3x-8 B. 7x³ +3x²+7x+2 D. 7x +9²-3x² - 8