Perform the indicated operations.(9x4 + 7xy - y3) - (x4 + 5xy + 7y3)

A. 9x4 + 2xy - 8y3
B. 8x4 + 2xy - 6y3
C. 8x4 + 2xy - 8y3
D. 10x4 + 13xy + 6y3


Answer: C

Mathematics

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