Réponses

2013-02-15T19:11:40+01:00

A = -14x - 1  ; B = 5x² - 4x - 1  ; C = -5x + 7 - 8 + 3x + x = -x - 1 ;

D = -4x² - 2x² + 3x - 1 + 2x + 3 = -6x² + x + 2

 

Exercice 2

(x + 2) . 4 - 2x - 10