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Discussion :: Quadratic Equations

  1. Find the roots of quadratic equation: 2x2 + 5x + 2 = 0?
    2. A.
    -2, -1/2
    B.
    4, -1
    C.
    4, 1
    D.
    -2, 5/2
    E.
    None of these

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    Answer : Option A

    Explanation :

    2x2 + 4x + x + 2 = 0
    2x(x + 2) + 1(x + 2) = 0
    (x + 2)(2x + 1) = 0 => x = -2, -1/2

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