Réponses

2013-12-21T15:37:57+01:00
B)25x²-30x+9=(5x-3)²
c)25+100x+100x²=(5+10x)²
d)36-24x+4x²=(6-2x)²
2013-12-21T15:52:14+01:00
b) ..(5x²).-30x + 9 = (5x-3)²
c) 25 + (-2)*5*10x  + 100x² = (5-10x)²
d)- 24x + 2²x²= (6 - 2x)²