(x-2/x+2)-(4/x²-4)=1

问题描述:

(x-2/x+2)-(4/x²-4)=1

(x-2)^2/(x^2-4)-4/(x^2-4)=1 [ (x-2)^2-4]=x^2-4 x^2-4x+4=x^2 4x=4 x=1