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CALCUL MENTAL

CALCUL MENTAL. Développement. CHOMAT Françoise collège Saint Eutrope Aix en Provence. deux élèves voisins répondent aux questions de couleurs différentes !. Préparez-vous. COTE GAUCHE. COTE DROIT. 1 er calcul. Réfléchissez!. (x+7)(x-7). (x+9)². 1 er calcul. 1 er calcul. Ecrivez!.

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CALCUL MENTAL

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  1. CALCUL MENTAL Développement CHOMAT Françoise collège Saint Eutrope Aix en Provence deux élèves voisins répondent aux questions de couleurs différentes !

  2. Préparez-vous COTE GAUCHE COTE DROIT

  3. 1er calcul Réfléchissez! (x+7)(x-7) (x+9)²

  4. 1er calcul 1er calcul Ecrivez! (x+7)(x-7) (x+9)²

  5. 2emecalcul 2eme calcul 2emecalcul Réfléchissez! (x+6)² (x+5)(x-5)

  6. 2emecalcul 2eme calcul 2emecalcul Ecrivez! (x+6)² (x+5)(x-5)

  7. 2emecalcul 3emecalcul 3eme calcul Réfléchissez! (3x-1)² (4x-1)²

  8. 2emecalcul 3emecalcul 3eme calcul Ecrivez! (3x-1)² (4x-1)²

  9. 4emecalcul 4eme calcul Réfléchissez! (2x+3)² (3x-2)²

  10. 4emecalcul 4eme calcul Ecrivez! (2x+3)² (3x-2)²

  11. 5emecalcul 5eme calcul Réfléchissez! (4x+1)(4x-1) (2x+1)(2x-1)

  12. 5emecalcul 5eme calcul Ecrivez! (4x+1)(4x-1) (2x+1)(2x-1)

  13. Poser les stylos

  14. Résultats (x-7)(x+7) = x² - 49 (x+6)² = x² +12x +36 (3x-1)² = 9x² - 6x +1 (2x+3)² = 4x² + 12x +9 (4x+1)(4x-1) = 16x² - 1

  15. Résultats (x +9)² = x² +18x +81 (x +5)(x-5) = x² - 25 (4x - 1)² = 16x² - 8x +1 (3x - 2)² = 9x² - 12x +4 (2x +1)(2x-1) = 4x² - 1

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