Need with this question on composition of two rational functions. i have a screenshot of the question where i need

using ( f ○ g )(x) = f(g(x))

substitute x = into f(x)

f(g(x)) = 5 / ( + 2 ) ×

         =

         = =

The denominator of f(g(x)) cannot be zero as this would make f(g(x)) undefined. Equating the denominator to zero and solving gives the value that x cannot be

solve 2x + 3 = 0 ⇒ x = - ← excluded value

domain is x ∈ ( - ∞, - ) ∪ ( - , + ∞ )

the real question is why is this guys last name heavyfoot

step-by-step explanation: