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Sagot :

Réponse:

1) x € ( - 5/2 , 4 )

2) x € ( - infini , 1 ] U [ 2 , infini )

3) x € ( - infini , 0 ) U ( 4 , infini )

4) x € [ 0 , 3/5 )

5) x € ( - infini , - 1/3 ] U [ 1 , infini )

6) x € ( - infini , - 2 ) U ( - 1/3 , infini )

7) x € ( - infini , - 7 ] U [ 11 , infini )

8) x € ( - infini , 1/5 ) U ( 1 , infini )

9) x € [ - 1 , - 1/2 ] U [ - 1/4 , infini )

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