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azd
@azd
June 2021
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je n'arrive pas
l'exercice
23
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slyz007
Verified answer
A) x²≤25 ⇔ -5≤x≤5 soit x∈[-5;5]
b) x²>1 ⇔ x<-1 ou x>1 soit x∈]-oo;-1[U]1;+oo[
c) x²<3 ⇔ -√3<x<√3 soit x∈]-√3;√3[
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Verified answer
A) x²≤25 ⇔ -5≤x≤5 soit x∈[-5;5]b) x²>1 ⇔ x<-1 ou x>1 soit x∈]-oo;-1[U]1;+oo[
c) x²<3 ⇔ -√3<x<√3 soit x∈]-√3;√3[