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Sagot :

TEAMCE

Bonjour,

On remplace x par le nombre dont on cherche l'image par f:

Image de 0:

F(0) = (3*0 -2)² -16

= (-2)²-16

= 4-16

= -12

image de -1:

F(-1) = (3*(-1)-2)²-16

= ((-3)-2)²-16

= (-5)²-16

= 25-16

= 9

image de 3:

F(3) = (3*3-2)²-16

= (9-2)²-16

= 7²-16

= 49 - 16

= 33

Bonne journée.

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