Factorise ces expressions. Merci

Réponse :

Explications étape par étape

Bonjour

Factoriser :

C = 2x(2x + 1) - (2x + 1)(x + 2)

C = (2x + 1)(2x - x - 2)

C = (2x + 1)(x - 2)

D = 3(x - 2)(x + 3) + (x + 3)(x + 2)

D = (x + 3)[3(x - 2) + x + 2]

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

D = (x + 3)(4x - 4)

D = 4(x + 3)(x - 1)

E = (x + 3)^2 - 4(x + 3)

E = (x + 3)(x + 3 - 4)

E = (x + 3)(x - 1)