Réponse:
E=9-x²+3x²-9x+7+5x³-7x³
E=16-9x+2x²-2x³
F=2x³+4-6x²+x²-2x+9x-3x-9x
F=4-5x-5x²+2x³
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Réponse:
E=9-x²+3x²-9x+7+5x³-7x³
E=16-9x+2x²-2x³
F=2x³+4-6x²+x²-2x+9x-3x-9x
F=4-5x-5x²+2x³