9. Factor. Check all that apply. (Hint: There are two correctly factored answer choices.) 9x² - 6x-3 (3x + 1) (3x - 3) (3x - 1) (3x + 3) 3(3x + 1)(x - 1) 3(3x - 1)(x + 1) (9x - 3)(x - 1) 9(x+3)(x - 1)

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