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The sum and product of roots of a quadratic equation are 4/7 and 8/7 respectively . Find the equation

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  1. x^2 - (4/7)x + 8/7 = 0
    7x^2 - 4x + 8 = 0
    check:
    x = (4±√208 i)/14 = (2±√52 i)/7
    clearly the sum is 4/7, and
    (2+√52 i)/7 * (2-√52 i)/7 = (2^2 + 52)/49 = 56/49 = 8/7

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