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nayouba
@nayouba
June 2021
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Bonjour quelqu'un peut m'aider pour les deux exos SVP :) j'ai rien compris :/
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Exo1
A=(a-8)+2a+4-(5-(5a+3))=3a-4-(2-5a)=3a-4+2+5a=8a-2
B=-(2a+3)-5+7a-(9-a)=-2a-3-5+7a-9+a=6a-17
C=x²-5+(7-2x²)-(-x²+5)-2x²=x²-5+7-2x²+x²-5-2x²=-2x²-3
Exo2
a=8x5²-(3+4)²+7x2au cube=(8x25)-(7)²+(7x8)=200-49+56=207
b=(2-9)²+3(-5)au cube+2x3²=49 + (3x-125)+18=49-375+18=-308
c=-5puissance4 -3x(-5+2)au cube - (7x2)² = 625 -3(-27)-(14²)=625+81-196=510
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Salut tout le monde , Besoin d'aide pour cette exercice SVP
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A=(a-8)+2a+4-(5-(5a+3))=3a-4-(2-5a)=3a-4+2+5a=8a-2
B=-(2a+3)-5+7a-(9-a)=-2a-3-5+7a-9+a=6a-17
C=x²-5+(7-2x²)-(-x²+5)-2x²=x²-5+7-2x²+x²-5-2x²=-2x²-3
Exo2
a=8x5²-(3+4)²+7x2au cube=(8x25)-(7)²+(7x8)=200-49+56=207
b=(2-9)²+3(-5)au cube+2x3²=49 + (3x-125)+18=49-375+18=-308
c=-5puissance4 -3x(-5+2)au cube - (7x2)² = 625 -3(-27)-(14²)=625+81-196=510