Multiply the dividend and the divisor by 27, simplify, and then use polynomial division.
divided by ;
All whole number coefficients, much easier to handle this way.
---
3x^3 0 -(1/3)x
|_______________________________________
|
27x-18 | 81x^4 54x^3 -9x^2 2
81x^4 54x^3
_______________
0 0 -9x^2
0 0
_____________
-9x^2 2
-9x^2 6
__________
0 -4
Quotient is .