Question

F(x)3x+5/x what is f(a+2)

Answer 1

F(X) = (3x + 5)/X
F(a + 2) = (3(a + 2) + 5)/(a + 2)
F(a + 2) = (3a + 6 + 5)/(a+2)
F(a + 2) = (3a + 11)/(a + 2).

This would be the final solution.

Answer 2

f(a+2) equals:

`(3a^2+12a+17)/(a+2)`

Explanation:

We are given

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

We have to find the value of f(a+2)

substituting a+2 in place of x in f(x), we get

`f(a+2)=3(a+2)+(5)/(a+2) \\\\f(a+2)=(3(a+2)^2+5)/(a+2) \\\\f(a+2)=(3(a^2+4+4a)+5)/(a+2) \\\\f(a+2)=(3a^2+12+12a+5)/(a+2) \\\\f(a+2)=(3a^2+12a+17)/(a+2)`

Hence, f(a+2) equals:

`(3a^2+12a+17)/(a+2)`