Simplify: fracx2−1x2+2x+1\\frac{x^2-1}{x^2+2x+1}fracx2−1x2+2x+1 (assume x≠−1x \neq -1x=−1).
fracx−1x+1\\frac{x-1}{x+1}fracx−1x+1
fracx+1x−1\\frac{x+1}{x-1}fracx+1x−1
x−1x - 1x−1
frac1x+1\\frac{1}{x+1}frac1x+1