Factor Completely $x^{3}-729$ A) $(x+9)\left(x^{2}-9 x+81\right)$ B) $(x+729)\left(x^{2}-1\right)$ C) $(x-9)\left(x^{2}+81\right)$ D) $(x-9)\left(x^{2}+9 x+81\right)$

Multiple Choice

Factor completely. If the polynomial cannot be factored, write "prime."
- $x^{3}-729$

A) $(x+9) \left(x^{2}-9 x+81\right)$
B) $(x+729) \left(x^{2}-1\right)$
C) $(x-9) \left(x^{2}+81\right)$
D) $(x-9) \left(x^{2}+9 x+81\right)$