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Find the Sum or Difference (7x6+6x87+4x7)(1+8x7+8x89x6)\left( 7 x ^ { 6 } + 6 x ^ { 8 } - 7 + 4 x ^ { 7 } \right) - \left( - 1 + 8 x ^ { 7 } + 8 x ^ { 8 } - 9 x ^ { 6 } \right)

Question 408

Multiple Choice

Find the sum or difference.
- (7x6+6x87+4x7) (1+8x7+8x89x6) \left( 7 x ^ { 6 } + 6 x ^ { 8 } - 7 + 4 x ^ { 7 } \right) - \left( - 1 + 8 x ^ { 7 } + 8 x ^ { 8 } - 9 x ^ { 6 } \right)


A) 14x8+12x72x6614 x ^ { 8 } + 12 x ^ { 7 } - 2 x ^ { 6 } - 6
B) 14x8+12x72x6814 x ^ { 8 } + 12 x ^ { 7 } - 2 x ^ { 6 } - 8
C) 2x8+12x72x68- 2 x ^ { 8 } + 12 x ^ { 7 } - 2 x ^ { 6 } - 8
D) 2x84x7+16x66- 2 x ^ { 8 } - 4 x ^ { 7 } + 16 x ^ { 6 } - 6

Correct Answer:

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