Réponses

2013-02-10T21:21:01+01:00
A= (2x-5) (7x+4)+(3-2x)(2x-1 A= 3x+11x+1x+1x= 16x
2013-02-10T21:35:24+01:00

A=14x²+8x-35x-20 +6x-3-4x+2x

A=14x²-7x-23

A=7x(7x-1)-23