Question

Factorise:
x^2-2+1/x^2-y^2

Answer 1

${x}^{2} - 2 + \frac{1} {x}^{2} - {y}^{2}$

$(x - \frac{1}{x})^{2} - {y}^{2}$

$(x - \frac{1}{x} + y)(x - \frac{1}{x} - y)$

hope it will help you ✔✔