Bonsoire, Qui peut m’aider svp

bonsoir

A = 5 x + 15

B = 20 - 10 x

c = - 40 x - 24

D = 2 x² + 6 x

E =  - 15 x² - 35 x

F  = 5 x + 15 - 12 x² + 20 x = - 12 x² + 25 x  + 15

G =  7 a - 14 + 21 b

Bonsoir,

A = 5 (x + 3)

A = 5x + 15

B = 5 (4 - 2x)

B = 20 - 10x

B = - 10x + 20

C = - 8 (5x + 3)

C = - 40x - 24

D = 2x (x + 3)

D = 2x² + 6x

E = - 5x (3x + 7)

E = - 15x² - 35x

F = 5 (x + 3) - 4x (3x - 5)

F = 5x + 15 - 12x² + 20x

F = - 12x² + 25x + 15

G = 7 (a - 2 + 3b)

G = 7a - 14 + 21b

G = 7a + 21b - 14