Réponses

2013-11-03T20:22:53+01:00
2(3x-5)-(5x-3)(-2x+1)
=6x-10-(-10x²+5x+6x-3)
=6x-10+10x²-5x-6x+3
=10x²-5x-7
2013-11-03T20:27:13+01:00
2(3x-5)-(5x-3)(-2x+1)
6x-10-(-10x²+5x+6x-3)
6x-10+10x²-5x-6x+3
10x²-5x-7