Réponses

2013-05-23T19:42:40+02:00
A= -2 au carré -3x(-2)+4
=-4-(-6)+4
=2+4
=6
B
-2ai carre +2x(-2)+22
-8+22
14
2013-05-23T22:20:53+02:00
A= a x (-2) - 3 x (-2) + 4
= -2a - (-6) + 4
= -2a + 6 + 4
-2a + 10

B= -a2 + 2a + 22
= -ax(-2)+2x(-2)+22
= ...