Simplify the complex rational expression: x2−1xx+1x2\frac{\frac{x^2-1}{x}}{\frac{x+1}{x^2}}x2x+1xx2−1
x−1x\frac{x-1}{x}xx−1
x(x−1)x(x-1)x(x−1)
x2−1x^2-1x2−1
x2−1x3+x2\frac{x^2-1}{x^3+x^2}x3+x2x2−1