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Find the Sum or Difference $\left( 2 x ^ { 7 } + 6 x ^ { 9 } - 7 - 7 x ^ { 8 } \right) - \left( 2 - 2 x ^ { 8 } + 3 x ^ { 9 } - 7 x ^ { 7 } \right)$

Question 254

Multiple Choice

Find the sum or difference.
- $\left( 2 x ^ { 7 } + 6 x ^ { 9 } - 7 - 7 x ^ { 8 } \right) - \left( 2 - 2 x ^ { 8 } + 3 x ^ { 9 } - 7 x ^ { 7 } \right)$

A) $9 x ^ { 9 } - 9 x ^ { 8 } - 5 x ^ { 7 } - 5$
B) $3 x ^ { 9 } - 9 x ^ { 8 } - 5 x ^ { 7 } - 5$
C) $9 x ^ { 9 } - 9 x ^ { 8 } - 5 x ^ { 7 } - 9$
D) $3 x ^ { 9 } - 5 x ^ { 8 } + 9 x ^ { 7 } - 9$

Find the Sum or Difference (2x7+6x9−7−7x8)−(2−2x8+3x9−7x7)\left( 2 x ^ { 7 } + 6 x ^ { 9 } - 7 - 7 x ^ { 8 } \right) - \left( 2 - 2 x ^ { 8 } + 3 x ^ { 9 } - 7 x ^ { 7 } \right)(2x7+6x9−7−7x8)−(2−2x8+3x9−7x7)

Multiple Choice

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Find the Sum or Difference $\left( 2 x ^ { 7 } + 6 x ^ { 9 } - 7 - 7 x ^ { 8 } \right) - \left( 2 - 2 x ^ { 8 } + 3 x ^ { 9 } - 7 x ^ { 7 } \right)$

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