Réponses

2013-05-23T23:08:20+02:00
113)
a) (6-5x)^2
b) (3x+7)^2
c) (x-3/4)(x+3/4)
d) (1+4y)(1-4y)

114)
1) (n+1)^2-(n-1)^2
= n^2+1-(n-1)^2
= n^2+1-n^2-1
=0

2) (n+1)^2-(n-1)^2
= (n+1-n-1)(n+1+n-1)
=0