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Sagot :

Réponse :

Ex1

A)2*7,5*10^6*10^5

= 15*10^11

=1,5*10^1*10^11

=1,5*10^12

b)3,5/14*10^-6*10^-(-2)

=0,25*10^-4

=2,5*10^-1*10^-4

=2,5*10^-5

C)13000000000000000000000+20000000000000000000

c=13020000000000000000000

c=1,302*10^22

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