Explanation:
6 (x² − 1) (6x − 1) / (6(x + 1))
6 (x − 1) (x + 1) (6x − 1) / (6(x + 1))
(x − 1) (6x − 1)
6x² − x − 6x + 1
6x² − 7x + 1
Answer:
D
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