Question

can someone explain to me how to do this please?

Let f(x) = x + 8 and g(x) = x^2 – 6x – 7. Find f(g(2)).

–7

–3

10

33

Answer 1

First find f(g(x)).
f(g(x))=(x^2 – 6x – 7.)+8
can u do?

Answer 2

what do i do first?

Answer 3

confused!

Answer 4

f(g(x))=(x^2 – 6x – 7.)+8
=x^2-6x-7+8
=x^2-6x+1
Nw f(g(2))=(2)^2-6(2)+1
can u do nw?

Answer 5

i got -7

Answer 6

That's right
Let f(x)=2x+1 and g(x)=x+1
To find f(g(x))
jst substitute g(x) in place of x in f(x).
That is
f(g(x))=2(x+1)+1
Nw r u k with finding f(g(x))?

Answer 7

i got it but i just don't know how you set it up

Answer 8

vch one?

Answer 9

(x^2 – 6x – 7.)+8

Answer 10

Did u understand my example?

Answer 11

no

Answer 12

ok.
Let us assume that f(x)=2x and g(x)=3x. k?

Answer 13

ok

Answer 14

Is it clear?