Question

please help me urgent question urgent need​

Answer 1

Let ,( a+1/a) be x.

So, (a+1/a)^2-4(a+1/a)+4

=x^2-4x+4

=x^2-2*x*2+2^2

=(x-2)^2

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

={(a^2-2a+1)/a}^2

=(a-1)^2/a^2