Answer:
9x^3(x^2 -4x -5)
Step-by-step explanation:
All terms have a factor of 9, but no larger multiple of 9.
All terms have a factor of x^3, but no higher power of x.
9x^3 is the largest common factor. Factoring that out, we have ...
9x^3(x^2 -4x -5)
