Question

x^2 + 1/x^2 - 3 factorise​

Answer 1

Answer:

Step-by-step explanation:

Factorise  

x2+1/x2-3 = (x2+1/x2-2) -1

               = (x – 1/x)2  - 12  

                = (a2  - b2)

               = (a+b) (a-b)

               = (x+1/x-1) (x+1/x+1)