Il faut chercher l'élément commun qui peut diviser chaque terme de l'expression.
A= 7x-14 = 7(x-2)
B= 12t + 6 = 6(2t+1)
A= 2t²-3t = t(2t-3)
B= 4x² + 20x = 4x (x+5)
A= -5x² + 25x = 5x(-x+5)
B= -10 - 16a = 2(-5 - 8a)
A = a²+3a = a(a + 3)
B = 4b² - 12 = 4(b²-3)
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Il faut chercher l'élément commun qui peut diviser chaque terme de l'expression.
A= 7x-14 = 7(x-2)
B= 12t + 6 = 6(2t+1)
A= 2t²-3t = t(2t-3)
B= 4x² + 20x = 4x (x+5)
A= -5x² + 25x = 5x(-x+5)
B= -10 - 16a = 2(-5 - 8a)
A = a²+3a = a(a + 3)
B = 4b² - 12 = 4(b²-3)