Simplify the following algebraic fraction: \acx2−1x2+2x+1\ac{x^2 - 1}{x^2 + 2x + 1}\acx2−1x2+2x+1.
\acx−1x+1\ac{x-1}{x+1}\acx−1x+1
\acx+1x−1\ac{x+1}{x-1}\acx+1x−1
111
x−1x-1x−1