Question 656801
{{{ (x+1)/(x-1) - (x-1)/(x+1) - 4/(x^2-1)}}}


{{{ (x+1)/(x-1) - (x-1)/(x+1) - 4/((x-1)(x+1))}}}


{{{ ((x+1)(x+1))/((x-1)(x+1)) - ((x-1)(x-1))/((x-1)(x+1)) - 4/((x-1)(x+1))}}}


{{{ ((x+1)(x+1) - (x-1)(x-1) - 4)/((x-1)(x+1))}}}


{{{ ((x^2+2x+1) - (x^2-2x+1) - 4)/((x-1)(x+1))}}}


{{{ (x^2+2x+1 -x^2+2x-1-4)/((x-1)(x+1))}}}


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


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


{{{ (4x-4)/((x-1)(x+1))}}}


{{{ 4(x-1)/((x-1)(x+1))}}}



{{{ 4cross((x-1))/(cross(x-1))(x+1))}}}


{{{ 4/(x+1)}}}