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10 May, 19:25

8x^2-2x-1=0 find the solution

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  1. 10 May, 20:46
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    8x² - 2x - 1 = 0

    8x² - 4x + 2x - 1 = 0

    4x (2x - 1) + 1 (2x - 1) = 0

    (4x + 1) (2x - 1) = 0

    4x + 1 = 0 or 2x - 1 = 0

    x = - 1/4 0r x = 1/2
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