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    l kk
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    Study Helper
    (Original post by John taylor)
    What am i doing wrong!
    It's your use of the quadratic formula, by itself.

    Suppose you had 2x^2-6x+4 i.e 2 times (x^2-3x+2)

    Use of the quadratic formula would give x=2 or x=1, but your quadratic is not (x-2)(x-1)

    You need to multiply by the coeff. of x^2.
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Updated: December 31, 2012
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