Réponses

2014-01-24T16:44:16+01:00
Bonjour

a) (6 -5x)(6 +5x)
b) (10+3x)²
c) 2i ( i +1 + 2 +i) = 2i ( 2i +3)
d) (b -5)²
e) (2-x)(2-x + 9+x) = (2-x)(11)
f) (5x+1+9)(5x+1-9) = (5x+10)(5x -8)
g) (7d +2 +3d +4)(7d +2 -3d -4) = ( 10d +6)( 4d -2)