LEONIEDUCROCQJESSY LEONIEDUCROCQJESSY 12-09-2020 Mathématiques Answered DM n°1Exercice 1:Développer et réduire les expressions suivantes :A = -7(5 - 2x)B = 7 - (5 - 2x)C = (t - 3)(-2t +5)D = (x + 3)2E = (3x + 4)(3x - 4)F = 3y - 5 +8(y - 11)G = (2x + 3)(7 - 2x) + 4x2 - 7H = 8(y - 3) - (2y + 3)(3-y)