Explications étape par étape :
Bonjour..
Calcules effectués
C = 11² - 9²
= 11 × 11 - 9 × 9
= 121 - 81
= 40
D = 2 × 5² + 3
= 2 × 5 × 5 + 3
= 50 + 3
= 53
E = 2³ + 3² + 4 × 1³
= 2 × 2 × 2 + 3 × 3 + 4 × 1 × 1 × 1
= 21
F = 48 - (6,5 - 2,5)²
= 48 - 4²
= 48 - 16
= 32
G = (2 × 6 - 8)²
= (2 × 6 - 8) × (2 × 6 - 8)
= 16
H = (13 - 3)² - (4 + 3)² - 7
= (13 - 3) × (13 - 3) - (4 + 3) × (4 + 3) - 7
= 44
Bonne soirée
☺
