Factors of 3x²-x-4 are *
(x+1) (3x-4)
(x+1) (3x+4)
(x-1)(3x+4)
(x-1) (3x-4)
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3x² - x - 4
3x² + 3x - 4x - 4
3x(x+1) - 4(x+1)
(3x-4)(x+1)
option (a)
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