Bonjour
A = xy-2x+xy = 2xy -2x
B = 7x²+14x +36x² = 43x² +14x
C = 9x^3 -54x +2x² = 9x^3 +2x² -54x
D = 6x+10x²+56x-8x²+4x-4 = 2x² +66x -4
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Bonjour
A = xy-2x+xy = 2xy -2x
B = 7x²+14x +36x² = 43x² +14x
C = 9x^3 -54x +2x² = 9x^3 +2x² -54x
D = 6x+10x²+56x-8x²+4x-4 = 2x² +66x -4