Réponse :
A = 8x + 10x + 4 + 9
A = 18x + 13
D = -5 - 4w - 8w - 10
D = -15 - 12
E = 4m + 6 + 8m² + 1 + 6m + 12 + 4m² + 9
E = 10m + 27 + 12m²
F = -4x - 6 + 12x² + 10 - 6x² + 12x + 4x + 9
F = 12x + 13 + 6x²
