Réponses

2012-05-04T11:12:23+02:00

A=x²-3x+2x-6+x-3

A=x²-9

B=(2x-3)(2x-3)

B=4x²-6x-6x+9

B=-12x+9+4x²

2012-05-04T12:23:34+02:00

A:(x+2)(x-3)+(x-3)

:x*x-3x+2x-6+x-3

A:x²-9

B:(2x-3)²

B:4x²-12x+9