Simplify.(7x3 + 6x5 - 2) + (5x4 - 1) - (-9x4 + 9x5 - 2x3)

A. 15x5 - 4x4 + 5x3 - 1
B. -3x5 + 14x4 + 9x3 - 3
C. -3x5 - 4x4 + 5x3 - 1
D. 15x5 - 4x4 + 5x3 - 3


Answer: B

Mathematics

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