Réponses

2013-04-28T14:22:32+02:00

(x+5)(x-3)

x*x+x*(-3)+5*x+5*(-3)

x²-3x+5x-15

x²+2x-15

 

(3x-7)(2+x)

3x*2+3x*x-7*2-7*x

6x+3x²-14-7x

3x²-x-14