Est ce que quelqu’un pourrait m’aider pour l’exercice 8 svp ? Merci d’avance...

Bonsoir

exercice 8

N = (3x-5)(2x-1)-4(x-1)

N = 6x² - 3x -10x + 5 - 4x + 4

N = 6x² - 17x + 9

2a

N = 6×0²-17×0+9

N = 9

2b.

N = 6×(-1)²-17×(-1)+9

N = 6+17+9

N = 32

2c.

N = (3×½-5)(2×½-1) - 4(½-1)

N = (3×½-5)(1-1) - 4(-½)

N = (3×½-5)×0 - 4(-½)

N = 2

2d

N = (3×⅔-5)(2×⅔-1) - 4(⅔-1)

N = ( 2-5)(4/3 -1 ) -4(-⅓)

N= -3(⅓) + 4/3

N = -1 + 4/3

N = 1/3