Réponse :
Explications étape par étape
Bonsoir
Factoriser:
x³-64+2(x²-16)
= x^3 - 4^3 + 2(x^2 - 4^2)
= x^3 - 4^3 + 2(x - 4)(x + 4)
= (x - 4)(x^2 + 4x + 4^2) + 2(x - 4)(x + 4)
= (x - 4)(x + 4)^2 + 2(x - 4)(x + 4)
= (x - 4)(x + 4)(x + 4 + 2)
= (x - 4)(x + 4)(x + 6)
