如图所示
1/(x-2)-4/(x²-4)=1 两边乘(x+2)(x-2)x+2-4=(x+2)(x-2)x-2=(x+2)(x-2)(x+2)(x-2)-(x-2)=0(x+2-1)(x-2)=0(x+1)(x-2)=0x1=-1 x2=2因为 x≠±2所以 x=-1