Réponses

2013-12-24T15:40:17+01:00
F(x)=(3-2x)(5x+7)
f(x)=15x+21-10x²-14x
f(x)=-10x²+x+21
2013-12-24T15:40:34+01:00
 f(x): (3-2x)(5x+7)
= 15x + 21 -10x² - 14x
= -10x² + x + 21