Question

Give f(x)= 1/x-5 and g(x)=x^2-5
Find f(g(7))
g(f(v))
g(g(x))

Answer 1

hint:

g(7) = (7)^2 - 5 = 49 - 5 = 44

so find f(44)

does that help?

Answer 2

Yeah I just wanted to make sure I was right when I got 1/39

Answer 3

seems to be right

Answer 4

I'm just really confused on the other 2.

Answer 5

just substitute v into x of f(x)

Answer 6

for example

f(v) = 1/v-5

now substitute that into the x of g(x)

Answer 7

1/(v-5)^2 - 5? Should I leave it as that or go further into it?