Bonjour
Un exercice à la fois merci
1)
A = (6x - 5)² - 9
A = (6 * 1 - 5)² - 9
A = (6 - 5)² - 9
A = 1² - 9
A = 1 - 9
A = - 8
B = (3x - 1) (12x - 16)
B = (3 * 1 - 1) (12 * 1 - 16)
B = (3 - 1) (12 - 16)
B = 2 * (- 4)
B = - 8
2)
A = (6x - 5)² - 9
A = 36x² - 60x + 25 - 9
A = 36x² - 60x + 16
B = (3x - 1) (12x - 16)
B = 36x² - 48x - 12x + 16
B = 36x² - 60x + 16.
