Question

(x-1/x)^2 using in identities

Answer 1

Answer:

-1

Step-by-step explanation:

(a-b)^2=a^2-2ab+b^2

(x-1/x)^2=x^2-2*x*1/x+1/x^2

=x^2-2+1/x^2

=-2+1

=-1