1) 1/x=(x-1)^2 2) (x+1)^2=-2/x
2)x^2+2x+1=2/x (x^2+2x+1)x=-2 (x^2+2x+1)x+2=0 x^3+2x^2+x+2=0 x^2*(x+2)+x+2=0 (x^2+1)*(x+2)=0 x^2+1=0 x+2=0 x=-2