Réponses

2013-10-22T15:59:32+02:00
Bonjour,

1a) (4x+3)² = 16x²+24x+9
1b) (5x-3)² = 25x²-30x+9

2a) E = (x²+1)(x+1) = x^3+x²+x+1

2b) (100+1)(10+1) = (10)^3+10²+10+1 =
(100+1)(10+1) = 101*11 = 1000+100+10+1 = 1111

J'espère que tu as compris
a+