OCEANE79202 OCEANE79202 25-11-2020 Mathématiques Answered 9 Réduire.A = 6x2 + 9x + 3x2 - 6 - 2xB = 11x + 7x - 6x2 - 2x - 4x2C = 8x + 5 - 2x2 - 7x - 15 + 8x2D = 6x2 + 3x + 12x - 9 - 10x2 + x - 4