Find the Sum or Difference $$\left( - 4 - 4 x ^ { 5 } + 3 x ^ { 7 } + 2 x ^ { 6 } \right) + \left( - 6 x ^ { 6 } - 2 x ^ { 5 } - 5 + 4 x ^ { 7 } \right)$$

question 197

Multiple Choice

Find the sum or difference.
- $$\left( - 4 - 4 x ^ { 5 } + 3 x ^ { 7 } + 2 x ^ { 6 } \right) + \left( - 6 x ^ { 6 } - 2 x ^ { 5 } - 5 + 4 x ^ { 7 } \right)$$

• A) \(7 x ^ { 7 } - 4 x ^ { 6 } - 6 x ^ { 5 } - 9\)
• B) \(7 x ^ { 14 } - 4 x ^ { 12 } - 6 x ^ { 10 } - 9\)
• C) \(- 10 x ^ { 7 } - 10 x ^ { 6 } - 2 x ^ { 5 } + 6\)
• D) \(- 3 x ^ { 36 } - 9\)

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The concentration range of a drug within the bloodstream that is considered effective and safe.

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A chemical compound used in medicine as a supplement and in food processing as a salt substitute.