Question

How do you solve this function? When x=(a+2).

`f(x)=3(x+5)+4/x`

Answer 1

See below

Explanation:

Simply, substitute the value of x in the given equation,

`f(a + 2) = 3(a + 2 +5) + 4/(a +2)`

`=> f(a + 2) = 3a + 4/(a + 2) + 21`

You can also simplify it further as per your requirement.