Răspuns:
Explicație pas cu pas:
1/x-1 --> amplific cu 4
x+1/x2+1:(x+3/4x-4 - 4/4x-4)(x+1/x+1 - 1/x+1)=
x+1/x2+1:(x+3-4/4x-4)(x+1-1/x+1)=
x+1/x2+1:(x-1/4x-4)(x/x+1)=
x2+1/x+1*(x-1/4x-4)(x/x+1)=
rezolvi continuarea
x2= x la puterea 2
Sper ca te-am ajutat!