Question 418534
{{{1/(x+1)-2/(x+1)^2+3/(x^2-1)}}}

LCD = (x+1)^2(x-1)

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



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

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