Réponses

2013-12-07T22:28:32+01:00
A)A=x^2+10x+25 - 7x + 35
A=x^2 + 3x +60

b) dsl je sais pas 

c) A=(2+5)^2 - 7(2+5)
A= 4 + 20+ 25 -14 -35
A=0
G= (x-5)²-(x-5)(7-2x)
= (x-5)(x-5-7+2x)
= (x-5)(3x-12)
2013-12-07T22:35:56+01:00
Factoriser
G= (x-5)²-(x-5)(7-2x) 
= (x-5)(x-5-7+2x) 
= (x-5)(3x-12)