Réponse:
A= x²+2x-3x-6-3(x+1)
x²+2x-3x-6-3x-3
x²+2x-9
B=(x-1) (2x+1) -x(x+3) -8
2x²+x-2x-1-x(x+3) -8
2x²+x-2x-1-x²+3x-8
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Réponse:
A= x²+2x-3x-6-3(x+1)
x²+2x-3x-6-3x-3
x²+2x-9
B=(x-1) (2x+1) -x(x+3) -8
2x²+x-2x-1-x(x+3) -8
2x²+x-2x-1-x²+3x-8
x²+2x-9