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Sagot :

AYUDA

g(x) = 3x - 12

antécédent de 0 ?

que vaut x pour que g(x) = 0 ?

soit résoudre 3x - 12 = 0

=> x = 4

VINS

bonjour

g (x) = 3 x - 12

3 x - 12 = 0

3 x = 12

x = 4

3 x - 12 = - 5

3 x = - 5 + 12

3 x =  7

x = 7/3

3 x - 12  = - 4

3 x = - 4 + 12

3 x = - 8

x = - 8/3

3 x - 12 = - 3

3 x = - 3 + 12

3 x = 9

x = 3

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