Find the Sum or Difference $$\left( 2 n ^ { 7 } - 9 n - 7 n ^ { 6 } \right) + \left( - 4 n ^ { 6 } + 5 n ^ { 7 } - 6 n \right)$$

question 253

Multiple Choice

Find the sum or difference.
- $$\left( 2 n ^ { 7 } - 9 n - 7 n ^ { 6 } \right) + \left( - 4 n ^ { 6 } + 5 n ^ { 7 } - 6 n \right)$$

• A) \(7 n - 11 n ^ { 7 } - 15 n ^ { 6 }\)
• B) \(- 19 n ^{14}\)
• C) \(- 4 n ^ { 7 } - 2 n ^ { 6 } - 13 n\)
• D) \(7 n ^ { 7 } - 11 n ^ { 6 } - 15 n\)

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