Since this polynomial has 4 terms, factoring by grouping should be the first thing we try here.
So, we have:

So, we can use ZPP to find out roots:

So our three roots are:

1x87
3x29
Either one equals to 87
I’m not sure if you are solving for y or x but if you are solving for y it’s
y=(2(9+x^2))/(1-6x)
or if your solving for x it is
x= (-3y+ sqr(9y^2+2y-36)) / (2)