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Sagot :

ALICIA5
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
CHECHENATOR95
factoriser
G= (x-5)²-(x-5)(7-2x) 
= (x-5)(x-5-7+2x) 
= (x-5)(3x-12)

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