Resposta :

[tex]f (-5) = 5 + \frac{3}{x + 2}\\\\ f (-5) = 5 + \frac{3}{(-5) + 2}\\\\ f (-5) = 5 + \frac{3}{-3}\\\\ f (-5) = 5 + (-1)\\\\ f (-5) = 5 - 1\\\\ f (-5) = 4\\\\\\\\ [/tex]

 

[tex]f (4) = 5 + \frac{3}{x + 2}\\\\ f (4) = 5 + \frac{3}{4 + 2}\\\\ f (4) = 5 + \frac{3}{6}\\\\ f (4) = 5 + \frac{1}{2}\\ \\ f (4) = 5,5\\ [/tex]

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