∵﹙x²-2x-3﹚ / |x-2|<0∴|x-2|>0①且x²-2x-3<0 即(x+1)(x-3)<0②由①得x≠2由②得﹣1<x<3综合﹣1<x<3且x≠2
等价不等式:x²-2x-3<0(x≠2)(x+1)(x-3)<0(x≠2)会了??