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calculati;
(4^x)^2=2^8


Răspuns :

(4x)^2=16
4x=16:2
4x=8
x=8:4
x=2
4^2x=2^8
(2^2)^2x=2^8
2^4x=2^8
4x=8
x=8/4
x=2