j’ai beosin d’aide pr lexo 5 svp merci

Réponse :

A = (x + 4)(x + 2)

A = x² + 2x + 4x + 8

A = x² + 6x + 8

B = (x + 3)(3x + 4)

B = 3x² + 4x + 9x + 12

B = 3x² + 13x + 12

C = (x - 6)(x + 8)

C = x² + 8x - 6x - 48

C = x² + 2x - 48

D = (x - 3)(5 - x)

D = 5x - x² - 15 + 3x

D = - x² + 8x - 15

E = (2x + 4)(5x - 7)

E = 10x² - 14x + 20x - 28
E = 10x² + 6x - 28

F = (-3x + 8)(4 - x)

F = -12x + 3x² + 32 - 8x

F = 3x² - 20x + 32