Final answer:
To factor out the GCF from the polynomial 9x - 27y + 9, we can factor out 9 from each term, resulting in 9(x - 3y + 1).
Step-by-step explanation:
To factor out the GCF from the polynomial 9x - 27y + 9, we need to find the greatest common factor of the terms. In this case, the GCF is 9. So, we can factor out 9 from each term:
9x - 27y + 9 = 9(x - 3y + 1).
Therefore, the factored form of the polynomial is 9(x - 3y + 1).