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3 December, 20:07

F (x) = 0 if f (x) = - 8x^2+6x+5

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  1. 3 December, 20:12
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    Use the quadratic formula

    x = (-b (+-) sqrt (b^2-4*a*c)) / 2a

    (-6 (+-) sqrt 36-4*-8*5) / - 16

    x=20/16 - (5/4)

    x=8/16 - (1/2)
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