Sagot :
Bonsoir,
a. 2x
2*3 =6
b. x^2
3² =3*3 = 9
c. 5x - 1
5*3-1 = 15-1 = 14
d. 5(x - 1)
5(3-1) = 5*2 = 10
Bonjour,
Calculer les expressions suivantes pour x = 3 :
A = 2x
A = 2 × 3
A = 6 ✅️
B = x²
B = 3²
B = 3 × 3
B = 9 ✅️
C = 5x - 1
C = 5 × 3 - 1
C = 15 - 1
C = 14 ✅️
D = 5(x - 1)
D = 5(3 - 1)
D = 5 × 2
D = 10 ✅️
Bonne soirée.