Réponses

2013-11-10T18:32:22+01:00
Bonsoir

A= (3+5)+(6-2)(1-4)
A = (9x² +30x +25)+ 6x -24x² - 2 +8x
A = - 15x² +44x +23

2013-11-10T18:35:18+01:00
(3x+5)²+(6x-2)(1-4x)
9x²+30x+25+6x-24x²-2+8x
-15x²+44x+23