Réponse :
Bonjour
A = (2x - 1)² - (8x - 4)(x + 3) + 2 - 4x
A = (2x - 1)² - 4(2x - 1)(x+3) - 2(2x -1)
A = (2x - 1)(2x - 1 - 4(x+3) - 2)
A = (2x - 1)(2x - 1 - 4x - 12 - 2)
A = (2x - 1)(-2x - 15)
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Réponse :
Bonjour
A = (2x - 1)² - (8x - 4)(x + 3) + 2 - 4x
A = (2x - 1)² - 4(2x - 1)(x+3) - 2(2x -1)
A = (2x - 1)(2x - 1 - 4(x+3) - 2)
A = (2x - 1)(2x - 1 - 4x - 12 - 2)
A = (2x - 1)(-2x - 15)