Sagot :
Réponse:
(x-1)(x-2)(2x-2)(x+7)
(x-1)(x-2)+2(x-1)(x+7)
(x-1)(x-2+2x+14)
(x-1)(3x+12)
3(x-1)(x+4)
Bonsoir,
(x - 1)(x - 2) + (2x - 2)(x + 7)
= (x - 1)(x - 2) + 2(x - 1)(x + 7)
= (x - 1)[ (x - 2) + 2(x + 7) ]
= (x - 1)(x - 2 + 2x + 14)
= (x - 1)(3x + 12)
= 3(x - 1)(x + 4)