Question

what is the answer of​

Answer 1

Step-by-step explanation:

as given

f(x) = x + 3

so,

f(-x) = ( -x +3)

so now,

f(x) + f(-x)

x + 3 +(-x +3)

x +3 - x +3

0 + 6

6 will be tha ANSWR

as uh cropped ur picture in wrong manner

Answer 2

Answer:

the right ans will be....6

Step-by-step explanation:

fx = x+3

then

f(x) + f(-x) = ?

now putting the value of Fx.

(x+3) + f(-x+3)

so, x will be cancel out. & then,

ans is 6.

you should have post the full qns pic. there, option d is hidden. check yours.