Subtract and write the resulting polynomial in descending order of degree.(10n + 4n7 + 11n4) - (9n4 + 7n7 + 17n)
A. -3n7 + 18n4 + 27n
B. -8n12
C. -3n7 + 2n4 + 27n
D. -3n7 + 2n4 - 7n
Answer: D
Mathematics
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