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Solve by reverse FOIL: 14x^2+48x+18=0

  • math -

    you have factors of the form

    (14x+?)(x+?) or
    (7x+?)(2x+?)
    where ? is is in the set {1,2,3,6,9,18}

    So, try a few until you come up with
    (7x+3)(2x+6)

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