Respuesta :

wegnerkolmp2741o

Answer:

5^ -4   or  1/ 5^4

Step-by-step explanation:

5^ -8  * 5^4

We know that a^b * a^c   = a^(b+c)

5^ -8  * 5^4 = 5^(-8+4) = 5^ -4

We know that a^ -b =  1/ a^b