Divide: x2−1x2÷x−1x\frac{x^2 - 1}{x^2} \div \frac{x - 1}{x}x2x2−1÷xx−1.
x+1x\frac{x+1}{x}xx+1
x−1x\frac{x-1}{x}xx−1
xx+1\frac{x}{x+1}x+1x
x+1x+1x+1