alondra19apple80 alondra19apple80 18-11-2022 Mathematics contestada Simplify the following expression. 2x + 3x³ -5x² + x² +7x+1+7x5 -3x³-4 A. 9x - 4x +7x+5 B. 9x5 +6x +7x+3 C. 5x5 +5x +7x-3 D. 9x - 4x +7x-3