The given function is:
[tex]f(x)=7x^2-1[/tex]So the value of f(x+2) is given by:
[tex]\begin{gathered} f(x+2)=7(x+2)^2-1 \\ =7(x^2+4x+4)-1 \\ =7x^2+28x+28-1 \\ =7x^2+28x+27 \end{gathered}[/tex]The value of f(x)+f(2) is given by:
[tex]\begin{gathered} f(x)+f(2)=7x^2-1+(7(2)^2-1) \\ =7x^2-1+27 \\ =7x^2+26 \end{gathered}[/tex]