Pouvez vous m'aider svp... Merci !!!

a) Racine2+1=(Racine2+1)*(Racine2-1)/(Racine2-1)
Racine2+1= (2-1)/(Racine2-1} = 1/(Racine2-1)

b) B=C
En effet Racine6 - Racine5 = (Racine6 - Racine5)* (Racine6+Racine5)/(Racine6+Racine5)
Racine6 - Racine5 = (6-5}/(Racine6+Racine5)=1/(Racine6+Racine5)