Simplify the polynomial by combining like terms.9x2 - 10x - 5 + -6x2 - 7x + 9

A. 3x2 - 17x + 4
B. 3x2 + 17x + 4
C. 3x2 - 17x - 14
D. 3x2 - 4x - 14

Answer: A

Mathematics

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