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B=(3 la puterea 30)+(3 la puterea 32)+(3 la puterea 34)


Răspuns :

3^30(1+3^2+3^4)=3^30(1+9+81)=3^30(10+81)=3^30x91
^ inseamna la puterea
3^30(1+3^2+3^4)=3^30(1+9+81)=3^30(10+81)=3^30x91