Simplify.(9x3 + 2x2) - (8x2 - 6x -1) - (4x3 + x - 3) 

A. 5x3 + 6x2 + 7x - 4
B. 5x3 - 4x2 - 5x + 4
C. 5x3 - 6x2 + 5x + 4
D. 13x3 - 10x2 + 5x - 4 

Answer: C

Mathematics

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