Réponse :

Exercice 4 :

A = 2,3456 x

B = 4,5 x

C = -2,345 x

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Exercice 5 :

D = -2,35 x

F = 4,556 x

I = 5,6 x

J = 3,5 x

Réponse:

bonjour voici la réponse

Explications étape par étape:

EXERCICE 4 :

A= 234.56×10^(-5)

= 0,0023456

B= 0.045×10⁴

= 450

C= -23,45×10²

= -2345

EXERCICE 5 :

D= 235 = -2.35×10²

E= 0.034 = 3.4×10^-2

F= 45.56×10^-3 = 4.556×10×10^-3

= 4.556×10^-2

G= -0.0505×10⁴

= -5.05×10^-2×10⁴= -5.05×10^2

EXERCICE 6 :

H=4.7×10^-2+5.4×10^-2

= 10^-2(4.7+5.4) = 10.1×10^-2

I= 8×10²×7×10^-5

= 56×10^-3 = 5.6×10^-1×10^-3 = 5.6×10^-4

J=(7×10^-13×3×10⁴)/(6×10^-4)

= (21×10^-9)/(6×10^-4)

= (21/6)×10^-9×10⁴

= 3.5×10^-5

bon courage