Resposta :

auditsys

[tex]\Large \boxed{\text{$ \sf T_n = n\:.\:[\:n - 1\:]$}}[/tex]

[tex]\Large \text{$ \sf T_8 = 8\:.\:[\:8 - 1\:]$}[/tex]

[tex]\Large \text{$ \sf T_8 = 8\:.\:7$}[/tex]

[tex]\Large \boxed{\boxed{\text{$ \sf T_8 = 56$}}}[/tex]

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