Question 870735
Factor the expression: -216x^3+1.

Multiple choice:
1) Prime Polynomial
2) (-6x+1)^3
3) (-6x-1) (36x^2-6x+1)
4) (-6x+1) (36x^2+6x+1)


My answer is (3)(-6x-1) (36x^2-6x+1). Am I correct?
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{{{(-6x-1)*(36x^2-6x+1) = -216x^3 - 1}}}