Bonsoir aidez moi svp calculer les expresion suivantes et donner l ecriture scientifque du resultat :

a=0.15x 10^-10 x 0.54 x 10^-1 / 2 x(10^8)^2

b=600 x 10^-7 x 140 x 10^9 / 3000x(10^-2)^2

c=6 x 10^5 x 400 x 10^1 / 40 x (10^-6)^3

d=27 x 10^7 x 8 x 10^-5/0.72 x (10^8)^2

e=28 x 10^-9 x 72 x 10-8 / 28 x (10^4)^2

f=0.2 x 10-3 x 16 x 10^-10 / 4 x (10^-7)^3

g=700 x 10^-6 x 3.6 x 10^2 / 12.6 x (10^6)^4

h=7 x 10^-10 x 480 x 10-6 / 0.42x (10^-4)^3
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