Question 678437
{{{(((x^3+x^2y)+(3x+3y))/(2x^2(x^2+3)))((9x^3)/(3(x^2-y^2)))}}}
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{{{((x^2(x+y)+3(x+y))/(2x^2(x^2+3)))((9x^3)/(3(x+y)(x-y)))}}}
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{{{((cross((x^2+3))cross((x+y)))/(2cross(x^2)cross((x^2+3))))((3x*cross(9x^3))/(cross(3)cross((x+y))(x-y)))}}}
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{{{3x/2(x-y) = highlight_green(3x/(2x-2y))}}}
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