Question 345867
{{{((x^2-x)/(x^2+3x+2)) / ((x^2+2x)/(x^2-1)) =
((x^2-x)/(x^2+3x+2))*((x^2-1)/(x^2+2x))}}}
{{{((x^2-x)/(x^2+3x+2)) / ((x^2+2x)/(x^2-1)) =
((cross(x)(x-1))/(cross((x+1))(x+2)))*(((x-1)cross((x+1)))/(cross(x)(x+2)))}}}
{{{((x^2-x)/(x^2+3x+2)) / ((x^2+2x)/(x^2-1)) =
highlight(((x-1)/(x+2))^2)}}}