Telecharger Cours

3AC Cours - steinmaths

2+4 à B = (2?x)×(3x+1) = 2×(3x+1)?x×(3x+1). = 2×3x+2×1?x×3x?x×1 = 6x+2?3x2 ?x. = ?3x2 +6x?x+2 = ?3x2 +5x+2 à C = 3x×(2x+1)+(3x?2)×(x+7) ...



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