A une passante
Énoncés Développer les expressions suivantes : Exercice 1. f (x) = 4x 3 − 9 2
2
Exercice 16. f (x) =
7x 1 + 10 3
2
.
2
Exercice 32. f (x) =
7x 5 − 10 7 1 7
7x 5 + . 10 7
2
Exercice 49. f (x) = (−x − 2) Exercice 50. f (x) = 1 −x 2
9x −4 . 5 7 7x . − 9 10 7 5x . − 6 10 5x + 2 . 5
Exercice 17. f (x) = − Exercice 18. f (x) =
.
4x 9 − 3 8
.
Exercice 33. f (x) = −9x + Exercice 34. f (x) =
.
Exercice 2. f (x) = − Exercice 3. f (x) = Exercice 4. f (x) =
2 x −5 . 2 2
x −9 3 2 3
x +9 . 3
2
2 x −1 . 2
Exercice 51. f (x) = −
2
7x −1 9 3x 3 − 4 4
9x 1 − 2 7 x 10 + 4 9
Exercice 19. f (x) = −x +
.
2
Exercice 35. f (x) = −6x + Exercice 36. f (x) = x 3 − 2 7
1 2
2
. .
2
Exercice 52. f (x) = − Exercice 53. f (x) =
.
2
.
2
2x 3 Exercice 20. f (x) = − 3 4 x 9 + Exercice 21. f (x) = 3 2
2
.
3x 1 − 4 3 5 x − 4 3 1 − 2x 2 x +1 9
3x 7 + . 2 9 9x +6 . 5 8 5x . − 3 8 2x 5 + . 7 8
Exercice 5. f (x) = − Exercice 6. f (x) = Exercice 7. f (x) =
10x 1 + 9 9
.
2
Exercice 37. f (x) = −
x 1 − 2 5 9 5
. 2x +
2
Exercice 54. f (x) = 9 . 5 Exercice 55. f (x) = Exercice 56. f (x) = . Exercice 57. f (x) =
.
2 10x − 10 . 7 2 4x −5 . 9
x 8 Exercice 22. f (x) = − + 3 5 1 Exercice 23. f (x) = 3x − 8 7x 7 . + 10 10 5 Exercice 24. f (x) = 3x + 2 5 Exercice 25. f (x) = 7x − 4 2x 1 Exercice 26. f (x) = − 9 10 5x 1 + Exercice 27. f (x) = − 4 3 Exercice 28. f (x) = 3x 3 − 7 2 7 5
2 2
. 1 3x + . 8 . 5 7x + . 4 2x 1 . + 9 10
2
Exercice 38. f (x) = 2x − Exercice 39. f (x) =
3x 2 + 2 3
.
2
Exercice 40. f (x) = − Exercice 41. f (x) =
Exercice 8. f (x) = − Exercice 9. f (x) =
7 7x + 10 10
8x 4 + 5 7
2x − 1 (x + 4). 3 3 x − (x + 4). 10 5 1− − x . 8
5x 3 − 2 4 3 8
2
5x 3 + . 2 4 .
2
2x +6 5 4x 7 − 5 9
9x 4 + . 10 7 9 x − . 8 5 5x 5 + . 6 3 2x − 7 . 6
Exercice 58. f (x) = − Exercice 59. f (x) =