Math

A box that holds an expensive pen has square ends, and its length is 13 cm longer than its width. The volume of the box is 60 cm^3. Determine the dimensions of the box.

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  1. 60 = w^2 (w+13)

    w^3 + 13 w^2 + 0 w - 60 = 0

    try w = 2

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  2. I got that from
    http://www.mathportal.org/calculators/polynomials-solvers/polynomial-roots-calculator.php

    the other two roots do not work for you (negative)

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