Find the Sum or Difference $$- \left( 2 x ^ { 3 } + x - 8 \right) + \left( 4 x ^ { 3 } + 2 x ^ { 2 } \right) - \left( 9 x ^ { 2 } - 3 x - 1 \right)$$

Find the sum or difference.
- $$- \left( 2 x ^ { 3 } + x - 8 \right) + \left( 4 x ^ { 3 } + 2 x ^ { 2 } \right) - \left( 9 x ^ { 2 } - 3 x - 1 \right)$$

A) $2 x ^ { 3 } + 7 x ^ { 2 } + 4 x - 9$
B) $1 x ^ { 3 } - 5 x ^ { 2 } - 2 x + 9$
C) $6 x ^ { 3 } - 11 x ^ { 2 } + 2 x - 9$
D) $2 x ^ { 3 } - 7 x ^ { 2 } + 2 x + 9$

Correct Answer:

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