Réponses

2014-02-25T08:17:45+01:00
E = 16-(5x-3)²
E = 4²-
(5x-3)²
E = (4-(5x-3))(4+(5x-3))
E = (-5x+7)(-5x+1)
Meilleure réponse !
2014-02-25T08:18:31+01:00
Bonjour Alec Bellery : 16-(5x-3)²=
[4-(5x-3)][4+(5x-3)] =
(4-5x+3)(4+5x-3) =
(7-5x)(1+5x)