Divide: x2−1x÷x+1x2\dfrac{x^2-1}{x} \div \dfrac{x+1}{x^2}xx2−1÷x2x+1.
x2(x−1)x^2(x-1)x2(x−1)
x(x−1)x(x-1)x(x−1)
x2−1x3\dfrac{x^2-1}{x^3}x3x2−1
x−1x\dfrac{x-1}{x}xx−1