Explications étape par étape:
E = 20x - 35 + 5x² - 6x + 45x - 54
E = 5x² + 59x - 89
Réponse :
E = 5(4x - 7) + (x+9)(5x-6)
E = 20x - 35 + (x + 9)(5x - 6)
E = 20x - 35 + x(5x - 6) + 9(5x - 6)
E = 20x - 35 + 5x² - 6x + 9(5x - 6)
E = 5x² + 20x - 6x + 45x - 35 - 54
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Explications étape par étape:
E = 20x - 35 + 5x² - 6x + 45x - 54
E = 5x² + 59x - 89
Réponse :
E = 5(4x - 7) + (x+9)(5x-6)
E = 20x - 35 + (x + 9)(5x - 6)
E = 20x - 35 + x(5x - 6) + 9(5x - 6)
E = 20x - 35 + 5x² - 6x + 9(5x - 6)
E = 20x - 35 + 5x² - 6x + 45x - 54
E = 5x² + 20x - 6x + 45x - 35 - 54
E = 5x² + 59x - 89