(1/(а-1)+1/(а+1))*(а+1)/а

Question

(1/(а-1)+1/(а+1))*(а+1)/а

Answer 1

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

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

(2*a*(a+1))/((a-1)*(a+1)*a)

2/(a-1)