RÉPONSE
A=2x+2-3x+7
A=-x+9
B=3x^2-21x+x-7
B=3x^2-20x-7
C=x^2+6x+9+x^2-2x -1
C=2x^2+4x+8
D=25x^2-70x-49
E=25-x^2
F=4x^2-9
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RÉPONSE
A=2x+2-3x+7
A=-x+9
B=3x^2-21x+x-7
B=3x^2-20x-7
C=x^2+6x+9+x^2-2x -1
C=2x^2+4x+8
D=25x^2-70x-49
E=25-x^2
F=4x^2-9