determinati numarul natural x care verifica egalitatea:

(4^x)^2=2^8 [tex] ^[/tex]


Răspuns :

(4^x)^2 = 2^8

4^2x = 2^8

(2^2)^2x = 2^8

2^4x = 2^8

4x = 8 |:4

x = 2
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