bonjour
A = 5x + 2 - 4x + 4 = x + 6
B = -5t - 3 - 4t + 1 = - 9 t - 2
C = 8 - 3t + 7 – 7t = - 10 t + 5
D = 4x2 + 5x – 1 + 2x2 - 4x + 5 = 6 x² + x + 4
E = -5x + 3x2 – 4 – 4x2 + 2x – 2 = - x² - 3 x - 6
continue, il suffit de regrouper les x², les x et les chiffres
F = 8t2 – 8t + 2 - 8t2 + t - 5
G = -5t + 6t2 + 4t – 5 + 3t – 2
H = 9x3 + 2x2 – 5x3 + x – 5 – 7x2
