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I don't know the quadreatic formula for this

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X^2 x+2=82, x^2+2x=82

  • I don't know the quadreatic formula for this - ,

    typo in the first ...

    in 2nd:
    x^2 + 2x - 82 = 0
    x = (-2 ± √(4 -4(1)(-82))/2
    = (-2 ± √332)/2
    = (-2 ± 2√83)/2
    = -1 ± √83

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