Subtract.9x4?+ 7x3?+ 1
A. 8x4 + 11x3 + x2 - 8x + 1
B. 8x4 + 3x3 - x2 - 8x + 1
C. 8x4 + 11x3 + x2 - 7x
D. 8x4 + 11x3 - x2 + 8x + 1
Answer: D
Mathematics
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A. 1/2 B. 1/4 C. Does not exist D. 0
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A. 
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A. 
?
B. 
?
C. 
?
D. 
?
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