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2ori n+2 la puterea a doua +2 la puterea a treia =2 la puterea a patra

Răspuns :

[tex]2n+2^2+2^3=2^4 \\\;\\ 2n=2^4-2^3-2^2 \\\;\\ \it n=(2^4-2^3-2^2):2 \\\;\\ n=2^3-2^2-2 =8-4-2 =2 \\ .[/tex]