Réponses

2014-10-17T19:39:16+02:00
(3x-5)(2x-1) -4(x-1)
(6x² -3x -10x +5) -4x +4
6x² -13x +5 -4x +4
6x² -17x +9
2014-10-17T19:39:37+02:00
= ( 3x - 5 ) ( 2x - 1 ) - 4 ( x - 1 )
= 3x * 2x + 3x * ( - 1 ) - 5 * 2x - 5 * ( - 1 ) - 4 * x - 4 * ( - 1 )
= 6x² - 3x - 10x + 5 - 4x + 4
= 6x² - 17x + 9