bonsoir,voila l'exercice 2 :)) merci infiniment aux personnes qui me répondront vous me sauvez la vie mdrr​

Réponse :

Explications étape par étape

Bonsoir

Factoriser :

A(x) = (4x + 9)(x + 1) (4x + 9)(2x + 3)

A(x) = (4x + 9)(x + 1 + 2x + 3)

A(x) = (4x + 9)(3x + 4)

B(x) = (2x + 1)(6x + 8) - (2x + 1)(x + 5)

B(x) = (2x + 1)(6x + 8 - x - 5)

B(x) = (2x + 1)(5x + 3)

C(x) = (7x + 4)(2x + 3) + 7x + 4

C(x) = (7x + 4)(2x + 3 + 1)

C(x) = (7x + 4)(2x + 4)

C(x) = (7x + 4) * 2(x + 2)

C(x) = 2(7x + 4)(x + 2)

D(x) = x^2 + 16x + 64

D(x) = x^2 + 2 * x * 8 + 8^2

D(x) = (x + 8)^2

E(x) = 9x^2 - 42x + 49

E(x) = (3x)^2 - 2 * 3x * 7 + 7^2

E(x) = (3x - 7)^2

F(x) = 49x^2 - 81

F(x) = (7x)^2 - 9^2

F(x) = (7x - 9)(7x + 9)