Add or subtract as indicated. Express the answer as a single polynomial in standard form.(9x6 - 6x4) + (3x6 - 5x4 - 8)
A. -8x - 11x6 - 14x4
B. 12x6 - 11x4 - 8
C. -3x6 + 4x4 - 8x
D. -13x11
Answer: B
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