Merci d'avance !!!!!!​

Réponse :

Explications étape par étape

Bonjour,

Factoriser :

A = c² - d²

B = x² - 100

C = 100 - 4x

D = -64x² + 16

Exercice 6 :

Factoriser :

A = (x +3)² - 25

A = (x + 3)² - 5²

A = (x + 3 - 5)(x + 3 + 5)

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

B = 64 - (1 - x)²

B = 8² - (1 - x)²

B = (8 - 1 + x)(8 + 1 - x)

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

C = 49 - (2 + 3x)²

C = 7² - (2 + 3x)²

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

C = (-3x + 5)(3x + 9)

C = (-3x + 5) * 3(x + 3)

C = 3(-3x + 5)(x + 3)

Exercice 7 :

Factoriser :

A = (3x - 1)² - 16

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

A = (3x - 5)(3x + 3)

A = (3x - 5) * 3(x + 1)

A = 3(3x - 5)(x + 1)

B = 9 - (2 - x)²

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

B = (x + 1)(-x + 5)

C = (x - 1)² - (2 + x)²

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

C = (-3)(2x + 1)