Question 674399
{{{((x^2-4y^2)/(6x^2-12xy))/(x^2+2xy)}}}
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{{{((x^2-4y^2)/(6x^2-12xy))(1/(x^2+2xy))}}}
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{{{(cross(x-2y)cross(x+2y)/(6x*cross(x-2y)))(1/(x*cross(x+2y)))}}}
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{{{highlight_green(1/6x)}}}

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