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Sagot :

NIPUNBACHU

Réponse :

a) 58 000

=  58 X 1000

=  58 X 10^3         (où n = 3)

_________

b) 5 800 X 10^9

=  58 X 100 X 10^9

= 58 X 10^2 X 10^9

= 58 X 10^(9 + 2)                  (a^m X a^n = a^(m + n))

= 58 X 10^11          (où n = 11)

__________

c) 0,058 X 10^-4

= 58 X 10^-3 X 10^-4

= 58 X 10^-(3 + 4)

= 58 X 10^-7                 (où n = -7)

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