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Math Help - hi assist

  1. #1
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    hi assist

    The passenger section of a train has a width 2x-7, length 2x + 3 , and heigh x-2, with all dimensions in metres. Solve a polynomial equation to determine the dimensions of the section of the train if the volume 117m^3.

    So do u first times the L x W x H to get the polynomials and the bring the 117 to the other side ( left side ) and then solve and get the factor?
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  2. #2
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    congratulations ... you've broken the code.
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  3. #3
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    Quote Originally Posted by lickman View Post
    The passenger section of a train has a width 2x-7, length 2x + 3 , and heigh x-2, with all dimensions in metres. Solve a polynomial equation to determine the dimensions of the section of the train if the volume 117m^3.

    So do u first times the L x W x H to get the polynomials and the bring the 117 to the other side ( left side ) and then solve and get the factor?
    Kind of.

    Yes, do L x W x H, and set this equal to 117.

    Then subtract both sides by 117 to get a polynomial equation equal to 0.

    Use the remainder and factor theorems and/or long division to find the factors of the polynomial.

    Use the null factor law to solve for x, keeping in mind that all the dimensions have to be greater than 0.
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