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noemiebeautyy
@noemiebeautyy
December 2020
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bonjour j'aurais besoin d'aide car je n'arrive pas à effectuer cet exercice.merci d'avance
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cee0
Choisisons -6 comme nombre de depart
-6-2=-8
-8(-6+3)=-8*-3=24
24+6=30
30-6(au carre)=30-36=-6
choisisons 4/7 comme nombre de depart
4/7-2= -10/7
-10/7*(4/7+3)=-10/7**25/7=-250/49
-250/49+6=44/49
44/49-4/7(au carre)=44/49-16/49=4/7
2.soit x un reel
((x-2)(x+3)+6)-x(au carre)
=(x(au carre)+3x-2x-6+6)
=x(au carre) +x-x(au carre)
=x
x=x donc elie a raison
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-6-2=-8
-8(-6+3)=-8*-3=24
24+6=30
30-6(au carre)=30-36=-6
choisisons 4/7 comme nombre de depart
4/7-2= -10/7
-10/7*(4/7+3)=-10/7**25/7=-250/49
-250/49+6=44/49
44/49-4/7(au carre)=44/49-16/49=4/7
2.soit x un reel
((x-2)(x+3)+6)-x(au carre)
=(x(au carre)+3x-2x-6+6)
=x(au carre) +x-x(au carre)
=x
x=x donc elie a raison