factorise x² - 13/24 × -1/12
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Multiply the whole equation by 24
24x² - 13x - 2
24x² - 16x + 3x - 2
8x(3x - 2) + 1(3x - 2)
(8x + 1) (3x - 2)
x = -1/8 or x = 2/3
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