Bonjour,
Calculer :
a. 7x - 2
7 * 3 - 2 = 21 - 3 = 18 ✅
d. (2x - 5) * 3
(2*5 - 5) * 3 = (10 - 5) * 3 = 5*3 = 15 ✅
b. 8 - 2x
8 - 2*0 = 8 - 0 = 8 ✅
e. 6(x + 3)
6(7 + 3) = 6*10 = 60 ✅
c. x² - 2
5² - 2 = 25 - 2 = 23 ✅
f. (2 + x)²
(2 + 3)² = 5² = 25 ✅
* = multiplication
Bonne journée.