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Calculati(1+3×3^2×3^3)÷(3^6-1)

Răspuns :

(1+3×3^2×3^3)÷(3^6-1)=(1+3^6)÷(3^6-1)=730÷728  dar cred ca este un semn gresit
(1+3*3²*3³)/(3⁶-1)=(1+3⁶)/(3⁶-1)=(1+3²*3⁴)/((3*3²-1)(3*3²+1))=1/(3³-1)=1/(27-1)=1/26