Simplify the Polynomial by Combining Like Terms $$- 15 x ^ { 9 } + 4 x ^ { 6 } + x ^ { 9 } + 6 x ^ { 9 }$$

question 140

Multiple Choice

Simplify the polynomial by combining like terms.
- $$- 15 x ^ { 9 } + 4 x ^ { 6 } + x ^ { 9 } + 6 x ^ { 9 }$$

• A) \(- 4 x 18\)
• B) \(- 8 x ^ { 9 } + 4 x ^ { 6 }\)
• C) \(- 4 x ^ { 9 } - 4 x ^ { 6 }\)
• D) \(- 15 x ^ { 9 } + 4 x ^ { 6 } + x ^ { 9 } + 6 x ^ { 9 }\)

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