Simplify: x2+2x+1x2−1\dfrac{x^2+2x+1}{x^2-1}x2−1x2+2x+1 for x≠1,−1x \neq 1, -1x=1,−1.
x+1x−1\dfrac{x+1}{x-1}x−1x+1
x−1x+1\dfrac{x-1}{x+1}x+1x−1
x+1x+1\dfrac{x+1}{x+1}x+1x+1
(x+1)2x−1\dfrac{(x+1)^2}{x-1}x−1(x+1)2