Question 914812
{{{(x+2)/(x+1) - (x+1)/(x+2)}}}



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



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



{{{ (2x+3)/((x+1)(x+2))}}}