Respuesta :

[tex]\begin{gathered} f(n)=n^3+5n \\ g(n)=2n-3 \end{gathered}[/tex]

To find f(2) substitute n by 2 in f(n)

[tex]f(2)=2^3+5(2)[/tex]

Let us find its value

[tex]\begin{gathered} f(2)=8+10 \\ f(2)=18 \end{gathered}[/tex]

To find g(2) substitute n by 2 in g(2)

[tex]g(2)=2(2)-3[/tex]

Let us find its value

[tex]\begin{gathered} g(2)=4-3 \\ g(2)=1 \end{gathered}[/tex]

Now let us add f(2) and g(2)

[tex]\begin{gathered} f(2)+g(2)=18+1 \\ f(2)+g(2)=19 \end{gathered}[/tex]

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