Question

For the functions 
f(x)=5x−8 
and 
g(x)=3x+5, 
find the following.

(a)
 (f+g)(x)

(b)
 (f−g)(x)

Answer 1

@epoweritheta

Answer 2

a. (f+g)(x)
= f(x) +g(x)
= 5x-8 +3x+5
8x-3

Answer 3

lts 3x+5 not -5

Answer 4

yes. thanks

Answer 5

ok

Answer 6

b. (f-g)(x)
= f(x)-g(x)
5x-8-3x+5
2x-3

says 2x-3 is wrong. what did I do wrong? @GIL.ojei

Answer 7

answer : 2x-13 suppose to change the 5 to -5.

Answer 8

(5x-8)-(3x+5)
remember to open up the bracket with minus
5x-8-3x-5=
5x-3x-8-5=
2x-13

Answer 9

got it?

Answer 10

yex. I forgot that. thanks (: