Question

plz give me this question answer with solution​

Answer 1

We can put formula =a^2-b^2

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

={m+1/m+m-1/m}{m+1/m-m-1/m}

={m+m+1/m-1/m}{m-m+1/m-1/m}

=2m