Find the missing polynomial.(2x9 + 5x6 - 7x2 + 3x + 7) - ? = -8x9 + 5x6 + 2x4 - 17x2 + 5x + 20

A. 10x9 - 2x4 + 10x2 + 2x - 13
B. 10x9 - 2x4 + 10x2 - 2x - 13
C. 10x9 - 2x4 + 10x2 - 13
D. 10x9 - 2x4 + 10x2 - 2x + 13


Answer: B

Mathematics

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