Question

medal
If f(x) = 2x - 4, and g(x) = (x^2 + x + 5), find g (f(x))

Answer 1

Replace any "x" in the function g(x) with f(x)

Answer 2

for example:

Answer 3

if f(x) = x+2 and g(x) = x^2+4

g(f(x))= (x+2)^2 + 4

Answer 4

x) = x+2 and g(x) = x^2+4

g(f(x))= (x+2)^2 + 4
@Babyslapmafro this is the right equation.

Answer 5

@aballer101

is that clear?

Answer 6

g (f(x)) = g(2x-4) (substituted f(x)=2x-4 )
g(x) = (x^2 + x + 5)
g(2x-4) means instead of x we have to substitute 2x-4 in g(x)
g(2x-4)=(2x-4)^2+(2x-4)+5

Answer 7

correct

Answer 8

a=-2x and b=4

Answer 9

g(2x-4)=(2x-4)^2+(2x-4)+5

Answer 10

now just simplify that equation

Answer 11

thank you g=fpor the report

Answer 12

Your Welcome :)

Answer 13

u did it ? @TypnoEchosis

Answer 14

Indeed I did.

Answer 15

2gx-4g-4x2+14x-17 = 0 is that right?

Answer 16

why is that? cant have some fun?

Answer 17

simplify this part of the equation:

(2x-4)^2+(2x-4)+5

Answer 18

4x2 - 14x + 17

Answer 19

I am sorry and it wont happen again but there was no need to report me

Answer 20

@grrrxxiii i didnt report u

Answer 21

i know it was the @TypnoEchosis

Answer 22

expand (2x-4)^2 first:

(2x-4)^2 = 4x^2 - 16x + 16

Answer 23

yes, you have the correct final answer:

4x2 - 14x + 17

Answer 24

thats it.. i dont have to simplify 4x2 - 14x + 17 ?

Answer 25

i would leave it in this form.

a quadratic equation.

Answer 26

aight thanks fam

Answer 27

no prob