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    Blipblob's Avatar
    Blipblob Posts: 1, Reputation: 1
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    #1

    Mar 22, 2009, 12:18 PM
    Imaginary roots
    question:

    Find all values of K such that the equation 4x (to the power of 2) + 6x +k = 0 has imaginary roots.
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Mar 22, 2009, 03:20 PM
    Use the discriminant,

    If it is < 0, then there are no real roots.

    In other words, solve for k.
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