Răspuns :

Razvanw0wid
[tex][3^2 \cdot 3^3 + 2^{54}:2^{52}+(3^5)^4:3^{20}]:31=(3^5+2^2+3^{20}:3^{20}):31=\\ =(243+4+1):31=248:31=8[/tex]

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