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Sagot :

MPOWER

Réponse :

Bonjour,

(1/7x + 2)(1 – x) = 0

Or A × B = 0 ⇔ A = 0 ou B = 0

1/7x + 2 = 0

1/7x = –2

x = –2/(1/7)

x = –14

1 – x = 0

–x = –1

x = 1

Donc S = {–14 ; 1}

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