Réponses

2013-01-06T16:01:31+01:00

A(x) = (x+2)(3x-1) + (2x ( 1)²

A(x) = 3x² -x +6x -2 +2x +1

A(x) = 3x² +7x -1

 

voila ^^

 

2013-01-06T16:05:47+01:00

A(x) = (x+2)(3x-1)+(2x(1)²)

        = 3x²-x+6x-2 +2

        = 3x²+5x