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March 25, 2017

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Given f(x)=(x−1)(x−2)+(x−2)(x−5)+(x−3)(x−8), what are the sum of the roots of f(x)?

  • algebra...... - ,

    f(x) = 3x^2 - 21x + 36
    sum of roots is -(-21/3) = 7

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