Question

respostas:110
120
121
123
125

Answer 1

Resposta:

$\frac{ {3}^{3} + {3}^{4} + {3}^{5} + {3}^{6} + {3}^{7} }{ {3}^{3} } \\ = \frac{ {3}^{3} +{3}^{3}. {3}^{1} +{3}^{3}. {3}^{2} +{3}^{3}. {3}^{3} + {3}^{3}.{3}^{4} }{{3}^{3}} \\ = \frac{ {3}^{3} (1 +{3}^{1} + {3}^{2} + {3}^{3} + {3}^{4} )}{{3}^{3}} \\ = 1 + 3 + 9 + 27 + 81 \\ = 121$