Bonjour,
A = 2n² + 6n - 16
A = 2n * n + 6 * n - 16
A = n (2n + 6) - 16
B = -8a² + 28a
B = -8a * a + 28 * a
B = a (-8a + 28)
C = 9b² - 6
C = 3 * 3b² - 3 * 2
C = 3 (3b² - 2)
D = 10a + 15b - 35
D = 5 * 2a + 5 * 3b - 5 * 7
D = 5 (2a + 3b - 7)
E = 125 - 5n + 10t
E = 5 * 25 - 5 * n + 5 * 2t
E = 5 (25 - n + 2t)
F = 2 (a - 3) + (a - 3) b
F = (a - 3) (2 + b)
Je te laisse faire les 4 derniers
N'hesite pas a poser des questions si tu ne comprends pas :)
