Add or subtract as indicated. Express the answer as a single polynomial in standard form.(3x6 - 5x3 - 13) - (8x6 + 8x3 + 18)

A. -5x6 - 13x3 - 31
B. -5x6 - 13x3 + 5
C. -5x6 + 3x3 + 5
D. -49x9


Answer: A

Mathematics

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