Sagot :

Bonjour

a. x → 9x

g (5) → 9 * 5 = 45

x → 9x

g (- 5) → 9 * (- 5) = - 45

b. x → 9x

g (7) → 9 * 7 = 63

c. g (- 3) → 9 * - 3 = - 27

d. 9x = 54

x = 54/9

x = 6

e. 9x = - 4,5

x = - 4,5/9 = - 0,5.