I'm studying for the accuplacer exam and I can't wrap my head around how to find the values in a cubed polynomial.
The example i'm having trouble with is: $27x^3 = 1$
The answers are $1/3$ and $(-1 \pm i \sqrt3 ) / 6$
I have absolutely NO clue how to solve this problem.. other than at some point I obviously have to use the quadratic formula. Thanks for any help you can offer.