Réponse :
Bonsoir,
a.
A = 3x + 6 = 3(x + 2)
R = 5x - 10 = 5(x - 2)
C = 4x + 9x = 13x
D = 12 + 18x = 6(3x + 2)
E = 50 - 10x = 10(5 - x)
F = x² + 7x = x(x + 7)
G = 4x² - 20x = 4x(x - 5)
H = 3x² - 5x = x(3x - 5)
I = 12x² - 3 = 3(4x² - 1)
b.
A = 7x + 7 = 7(x + 1)
B = 3x² + 3x = 3x(x + 1)
C = 18x - 9x = 9x
D = 10 - 20x = 10(1 - 2x)
E = 4x² - 9x = x(4x - 9)
F = 10x² + 35x = 5x(2x + 7)
