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A.E.E2 EB9 Maths Noel 2011

r.nohra 1

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r.nohra 1
Posted on January 7, 2012 Full Size| Slideshow

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4 Comments

wassim abdel nour
12:51 PM on January 14, 2012 
la reponse finale ne correspond a aucun choix dans la question
wassim abdel nour
12:43 PM on January 14, 2012 
tu ne peux pas simplifier 2^4 et 2^2 car c'est une addition non une multiplication
rita
10:07 AM on January 13, 2012 
j'ai compris l erreur merci monsieur
mazenhabib
5:02 PM on January 7, 2012 
RITA, pourquoi tu as eleve le 20 au carre??
tu as : ( a + 1/a )^2 = 20 donc :
a^2 +1/a^2 + 2 = 20
a^2 +1/a^2= 20-2
a^2 +1/a^2=18.
ce n'est pas une equation a resoudre!!!

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