Add or subtract as indicated. Express the answer as a single polynomial in standard form.(6x7 - 9x6 - 5x5 + 2) + (7x7 + 7x6 - 4x5 - 1)
A. 13x14 - 2x12 - 9x10 + 1
B. 2x36 + 1
C. 9x7 + 9x6 + 5x5 - 2
D. 13x7 - 2x6 - 9x5 + 1
Answer: D
Mathematics
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