Question 478752
{{{(x^2-x-12)/(x+1)}}}/{{{(2x+6)/(x^2-3x-4)}}}

{{{((x-4)(x+3))/(x+1)}}}/{{{(2x+6)/((x-4)(x+1))}}}

{{{((x-4)(cross(x+3)))/(cross(x+1))}}}*{{{((x-4)(cross(x+1)))/2(cross(x+3))}}}

{{{(x-4)^2/2}}}

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