bonjour est ce que vous pouvez m aider svp

Bonjour,

A = 16x +4
= 4*4*x +4
= 4(4x+4)

B = 9 - 72x
= 9 - 8*9*x
= 9(1 - 8x)

C = 12 - 8x
= 3*4 - 2*x*4
= 4(3 - 2x)

D = - 6x - 18
= -2*3*x - 2*3*3
= -3(2x + 6)

E = 9x +6
= 3*3*x + 3*2
= 3(3x + 2)

F = 42 - 14x
= 3*14 - x*14
= 14(3 - x)