Question

Let f(x) = 1/x and g(x) = x^2 - 9x. What two numbers are not in the domain of f^og? Separate your answers with a comma.

Answer 1

Can someone help me with this?

Answer 2

Hint a denominator cannot be zero

Answer 3

f^og = 1 / (x^2 - 9x)

Answer 4

so you need to find values of x which will make x ^2 - 9x = 0

Answer 5

solve
x^2 - 9x = 0

Answer 6

Sorry I can't figure this out

Answer 7

can you factor x^2 - 9x
what is common to x^2 and 9x ?

Answer 8

what is in x^2 and 9 x ?

Answer 9

....x?