Question

identity : (a+b)(a-b)=a²-b² [x+1/x] [x-1/x]​

Answer 1

Answer:

-1/x^2

Step-by-step explanation:

(x+1/x) (x-1/x)

(x^2 - 1^2)/x^2

so we can write it

x^2/x^2-1/x^2

x^2 to x^2 cut so

Answer = -1 /x^2