Réponse :

Explications étape par étape

Bonjour

A = 7x + 14

A = 7 * x + 7 * 2

A = 7(x + 2)

B = 15x - 25

B = 5 * 3x - 5 * 5

B = 5(3x - 5)

C = 6x^2 + 4x

C = 2x * 3x + 2x * 2

C = 2x(3x + 2)

D = (5x + 3)(x + 7) + (5x + 3)(3x - 2)

D = (5x + 3)(x + 7 + 3x - 2)

D = (5x + 3)(4x + 5)

E = (x + 1)(2x + 4) + (x + 1)(3x - 10)

E = (x + 1)(2x + 4 + 3x - 10)

E = (x + 1)(5x - 6)

F = x^2 - 25

F = x^2 - 5^2

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

G = 4x^2 - 64

G = (2x)^2 - 8^2

G = (2x - 8)(2x + 8)

G = 2(x - 4) * 2(x + 4)

G = 4(x - 4)(x + 4)

H = 36x^2 - 1

H = (6x)^2 - 1^2

H = (6x - 1)(6x + 1)

J = 9x^2 - 81

J = (3x)^2 - 9^2

J = (3x - 9)(3x + 9)

J = 3(x - 3) * 3(x + 3)

J = 9(x - 3)(x + 3)