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16 December, 13:14

What are the solutions to the equation? p2-12p=13

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  1. 16 December, 14:36
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    P² - 12 p - 13 = 0

    Δ = (-12) ² - 4 (1 * - 13)

    Δ = 144 + 52

    Δ = 196 = 14²

    x₁ = ( - (-12) + 14) / 2 = 26/2 = 13

    x₂ = ( - (-12) - 14) / 2 = - 2 / 2 = - 1

    S = 13
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