Find the Sum or Difference $$\left( 5 x ^ { 4 } - 9 x ^ { 2 } + x \right) - \left( 2 x ^ { 3 } + 8 x ^ { 2 } + 3 x \right) + \left( 4 x ^ { 2 } - x \right)$$

Find the sum or difference.
- $$\left( 5 x ^ { 4 } - 9 x ^ { 2 } + x \right) - \left( 2 x ^ { 3 } + 8 x ^ { 2 } + 3 x \right) + \left( 4 x ^ { 2 } - x \right)$$

A) $5 x ^ { 4 } - 2 x ^ { 3 } - 13 x ^ { 2 } - 3 x$
B) $5 x ^ { 4 } + 2 x ^ { 3 } - 21 x ^ { 2 } - 3 x$
C) $11 x ^ { 5 } + 7 x ^ { 4 } - 3 x$
D) $5 x ^ { 4 } - 2 x ^ { 3 } - 11 x ^ { 2 } + 3 x$

Correct Answer:

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