Réponse :

Bonjour

Explications étape par étape

D = 35.4 × 10 × 2 × 10^4

D = 35.4 × 2 × 10^(1) × 10 ^4

D = 70.8 × 10^(1+4)

D = 70.8 × 10^5

D = 7.08 × 10^1 × 10^5

D = 7.08 × 10^(1+5)

D = 7.08 × 10^6

G = 10^8/2 × 10^5

G = 1/2 × 10^8/10^5

G = 0.5 × 10^(8-5)

G = 0.5 × 10^3

G = 5.0 × 10^-1 × 10^3

G = 5.0 × 10^(-1+3)

G = 5.0 × 10^2