Répondre :
g (x) = - 2 x + 4
g ( - 1.5 ) = - 2 * - 1.5 + 4 = 3 + 4 = 7
g ( 2) = - 2 *2 + 4 = 0
g ( 0 ) = 4
g ( - 1 ) = - 2 * - 1 + 4 = 2 + 4 = 6
- 2 x + 4 = 7
- 2 x = 7 - 4
- 2 x = 3
x = - 3 /2
- 2 x + 4 = - 3
- 2 x = - 3 - 4
- 2 x = - 7
x = 7/2
g (x) = - 2 x + 4
g ( - 1.5 ) = - 2 * - 1.5 + 4 = 3 + 4 = 7
g ( 2) = - 2 *2 + 4 = 0
g ( 0 ) = 4
g ( - 1 ) = - 2 * - 1 + 4 = 2 + 4 = 6
- 2 x + 4 = 7
- 2 x = 7 - 4
- 2 x = 3
x = - 3 /2
- 2 x + 4 = - 3
- 2 x = - 3 - 4
- 2 x = - 7
x = 7/2