factoriser a l'aide d'un facteur commun:
(x-1)(3x-1)-(3x-3)(7x-2)= (x-1)(3x-1)- 3(x-1)(7x-2)= (x-1)(3x-1-3(7x-2))
= (x-1)(3x-1-21x+6)= (x-1)(-18x+5)= - (x-1)(18x - 5)
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Bonsoir !!
factoriser a l'aide d'un facteur commun:
(x-1)(3x-1)-(3x-3)(7x-2)= (x-1)(3x-1)- 3(x-1)(7x-2)= (x-1)(3x-1-3(7x-2))
= (x-1)(3x-1-21x+6)= (x-1)(-18x+5)= - (x-1)(18x - 5)