Question

6. If f(x) = x + 3, then f(x) + f(-x) is equal to
(a) 3
(b) 2x
(c) O​

Answer 1

Answer:

, Options c

X+3=0

X= -3

f(-3)+f(3)

-3f + 3f

=0

hope it's help you

mark as brainliest

Answer 2

Answer:

The value of f(x)+f(-x)=6.

Step-by-step explanation:

Given: f(x) = x + 3

To find the value of  f(x) + f(-x) .

We have; f(x) = x + 3    ...(1)

Replace x by -x we get:

f(-x)= -x+3     ..(2)

Add equations (1) & (2) we get:

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

             =6

Hence, option C is correct.

#SPJ3

Disclaimer: The question is incomplete, complete question is given below:

. If f(x) = x + 3, then f(x) + f(-x) is equal to

(a) 3

(b) 2x

(c) 6

(d) 9