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Sagot :

Réponse :

Explications étape par étape

Q(x) = x^3 - x ^2 - x + 1

Q(x) = x^2(x - 1 ) - ( x - 1)

Q(x) = (x-1) (x^2 - 1)

Q(x) = (x-1) (x-1) (x+1)

Q(x) = (x-1)^2 (x+1)

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