Réponses

2012-10-23T14:53:25+02:00

A = 7/3 (6x-3 )

A = 7/3x6 x + 7/3 x -3

A = 14x  - 7

B = 4y x y + 4y x -1  -5y  + 5

 B = 4y² - 4y - 5y + 5

B = 4y² -9y + 5

C =3t² + 3t + 5t -10 + t² -2t

C = 4t² + 6t - 10

2012-10-23T14:54:25+02:00

B= ( 4y - 5 )( y - 1 )

 = 4y x y + 4y x (-1) -  5 x y + 5 x (-1)

 = 4y^2 -4y - 5y + (-5)

 = 4y^2 -9y +5