Answer:
f(x) = 4x, x≠9
Step-by-step explanation:
4x^2 - 36x
-------------------
x-9
Factor out 4x in the numerator
4x(x - 9)
-------------------
x-9
We can cancel x-9 in the numerator and denominator, but we need to remember x cannot equal 9
f(x) = 4x, x≠9
