Final answer:
The expression in its factored form is 9(2x²²⁷x - 1).
Step-by-step explanation:
The given expression is 18x²²⁷x-9. To factor it, we need to look for common factors. In this case, both terms have a factor of 9. Factoring out 9 gives us:
9(2x²²⁷x - 1)
So, the expression in its factored form is 9(2x²²⁷x - 1).