Question

If f(x) = 3x+5 then show that . f(x) +f(-x) =10 ( polynomial)​

Answer 1

Answer:

i don't know ur answer when I do this then my solution is x=-15

I am not sure

Answer 2

Step-by-step explanation:

f(x)= 3x+5

f(-x)= 3*(-x)+5

     = -3x+5

Now,

f(x)+f(-x)= 3x+5-3x+5

             =5+5

             =10

Therefore, hence proved.