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Réponse :

Explications étape par étape

Bonjour

T = (10^(-8) x 0,7 x 10^12) / (21 x 10^3)

T = (0,7/21) x 10^(-8+12-3)

T = [7/(10 x 3 x 7)] x 10^(-11+12)

T = 1/30 x 10^1

T = 10/30

T = 1/3

U = (24 x 10^2 x 3,5 x 10^5) / (8 x 10^(-1) x 21 x 10^4)

U = (24 x 3,5)/(8 x 21) x 10^(2+5+1-4)

U = (3 x 8 x 7)/(8 x 3 x 7 x 2) x 10^(8-4)

U = 1/2 x 10^4

U = 10000/2

U = 5000

V = (4 x (10^(-2))^3 x 10^2) / (12 x 10^(-3))

V = (4/12) x 10^(-2*3+2+3)

V = 1/3 x 10^(-6+5)

V = 1/3 x 10^(-1)

V = 1/3 x 1/10

V = 1/30

W = (1,5 x 10^(-5) x (2 x 10^3)^2) / (0,14 x 10^2)

W = (1,5 x 2^2 / 0,14) x 10^(-5+3*2-2)

W = [(3 x 2 x 2 x 100)/(2 x 7 x 2)] x 10^(-7+6)

W = (300/7) x 10^(-1)

W = 300/7 x 1/10

W = 300/10 x 1/7

W = 30 x 1/7

W = 30/7