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7 January, 16:09

X^2+2x-5=0 quadratic form

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  1. 7 January, 16:17
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    -1+√6

    -1-√6

    Step-by-step explanation:

    x²+2x-5=0

    x = (-2±√ (2²-4 (-5))) / 2 = (-2±√ (4+20)) / 2 = (-2±√24) / 2

    x₁ = (-2+√24) / 2 or x₂ = (-2-√24) / 2

    x₁ = (-2+2√6) / 2 or (-2-2√6) / 2

    x₁=-1+√6 or x₂=-1-√6
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