Réponses

2014-10-15T19:22:36+02:00
Bonsoir

a =( 9x ² + 30 x +25) - 3 x -5
a = 9 x² + 30 x +25 - 3 x -5
a = 9 x² + 27 x  +20

(3 x -5) ( 3 x-5 - 1)
( 3 x -5) ( 3 x - 6)

pour x = 0 , A = - 5 x -6 = 30
pour x = 2
A = ( 6 -5)(6 -6)
1 x 0 = 0