Add or subtract as indicated.(-6 + 4x3 + 5x5 + 7x4) + (2x4 + 8x3 + 5 + 5x5)
A. 10x10 + 9x8 + 12x6 - 1
B. 10x5 + 9x4 + 12x3 - 1
C. -4x5 - 4x4 + 10x3 + 12
D. 31x24 - 1
Answer: B
Mathematics
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