Question

ANSWER FAST PLEASE
algebraic identities​

Answer 1

(x-1/x)^2

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

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

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

=27-2

=25

hence value of (x-1/x)^2=25

value of (x-1/x )=5