Respuesta :

9514 1404 393

Answer:

  3km^3

Step-by-step explanation:

The rule of exponents that is useful here is ...

  (a^b)/(a^c) = a^(b-c)

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  [tex]\dfrac{12k^2m^8}{4km^5}=\dfrac{12}{4}k^{2-1}m^{8-5}=\boxed{3km^3}[/tex]