Réponse :

Explications étape par étape

Bonjour

Factoriser :

A = (x + 7)^2 - 25

A = (x + 7)^2 - 5^2

A = (x + 7 - 5)(x + 7 + 5)

A = (x + 2)(x + 12)

B = (y - 9)^2 - 36

B = (y - 9)^2 - 6^2

B = (y - 9 - 6)(y - 9 + 6)

B = (y - 15)(y - 3)

C = (2x + 3)^2 - 64

C = (2x + 3)^2 - 8^2

C = (2x + 3 - 8)(2x + 3 + 8)

C = (2x - 5)(2x + 11)

D = 100 - (4x - 11)^2

D = 10^2 - (4x - 11)^2

D = (10 - 4x + 11)(10 + 4x - 11)

D = (-4x + 21)(4x - 1)