Réponse :
Explications étape par étape
Bonjour
S(x) = 2(4x - 1)^2 - 4x + 1
S(x) = 2(4x - 1)(4x - 1) + (-1) * 4x + (-1) * (-1)
S(x) = (2 * 4x - 2 * 1)(4x - 1) + (-1) * (4x - 1)
S(x) = (4x - 1)(8x - 2) - 1(4x - 1)
S(x) = (4x - 1)(8x - 2 - 1)
S(x) = (4x - 1)(8x - 3)