denombrements, combinatoire exercices corriges
0. 8. 12x2 = 6x. 9. x2 ? 8x + 16 = 0. 10. 4x2 + 12x +9=0. 11. x2 ? 4x ? 21 = 0. 12. x2 ? 14x +13=0. 13. 2x2 +2x ? 40 = 0. 14. 6x2 ? 12x = ?6 15.
0. 8. 12x2 = 6x. 9. x2 ? 8x + 16 = 0. 10. 4x2 + 12x +9=0. 11. x2 ? 4x ? 21 = 0. 12. x2 ? 14x +13=0. 13. 2x2 +2x ? 40 = 0. 14. 6x2 ? 12x = ?6 15.