Réponse :
bonjour
f (x) = x - 5
f ( - 3 ) = - 3 - 5 = - 8
b ) f (7) = 7 - 5 = 2
c ) x - 5 = 7
x = 7 + 5 = 12
x - 5 = 4
x = 4 + 5 = 9
f ( 9) = 4
Explications étape par étape :
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Réponse :
bonjour
f (x) = x - 5
f ( - 3 ) = - 3 - 5 = - 8
b ) f (7) = 7 - 5 = 2
c ) x - 5 = 7
x = 7 + 5 = 12
x - 5 = 4
x = 4 + 5 = 9
f ( 9) = 4
Explications étape par étape :