Sagot :
Bonsoir ,
1/ x = -2
x-4 = -2-4 = -6
x^2 = (-6)^2 = 36
x-16 = 36-16 = 20
2/ (x-4)^2 - 16 = (x-4)^2 -4^2
= (x-4-4) (x-4+4) (identité remarquable)
= (x-8) x
= x(x-8)
3/ pour x = 6
Le programme renvoie 6(6-8) = 6(-2) = -12
Bonne soirée
1/ x = -2
x-4 = -2-4 = -6
x^2 = (-6)^2 = 36
x-16 = 36-16 = 20
2/ (x-4)^2 - 16 = (x-4)^2 -4^2
= (x-4-4) (x-4+4) (identité remarquable)
= (x-8) x
= x(x-8)
3/ pour x = 6
Le programme renvoie 6(6-8) = 6(-2) = -12
Bonne soirée