Simplify: fracx3+x2−x−1x2−1\\frac{x^3 + x^2 - x - 1}{x^2 - 1}fracx3+x2−x−1x2−1 (assume xneqpm1x \\neq \\pm 1xneqpm1).
x+1x + 1x+1
x−1x - 1x−1
x2+1x^2 + 1x2+1
xxx