l'image corespond a l'exo 2
exercice 1:
1. reponce B
2. reponce B
3.reponce A
4. reponce C
5.reponce C
exercice bonus:
[tex]( \frac{2}{7} x - 3) \times (7x - 21) - (2x + 5) \times (x - 3) \\ 2 {x}^{2} - 6x - 21x + 63 - (2 {x}^{2} - x - 15) \\ 2 {x}^{2} - 6x - 21x + 6 - 2 {x}^{2} + x + 15 \\ - 26x + 78[/tex]
