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helpp please dau coroana

Helpp Please Dau Coroana class=

Răspuns :

[2+(2^2013+2^2012+...+2)]/ 4^1008=(2+2^2014-1)/ 2^2016= 2^2014+1 / 2^2016= 1/4.

Sper ca te-am ajutat!