ETHAN83661 ETHAN83661 Mathématiques Answered Exercice noté : Développer et réduire : A = (5x + 9)²; C = (4x + 5) (4x - 5); E = (7x + 2) (7x - 2); B = (3x - 7)2²; D= (8x - 3)²; F = (11x + 6)²;