.Solution
Given
[tex]f\left(x\right)=2x-\frac{4}{x}[/tex]
We are required to find f(a+1)
[tex]\mathrm{For}\:f=2x-\frac{4}{x}\:\mathrm{substitute}\:x\:\mathrm{with}\:a+1[/tex][tex]\begin{gathered} =2\left(a+1\right)-\frac{4}{a+1} \\ \\ \end{gathered}[/tex]
The correct option is option D
