通分:1/2x-2,1/(x-1)²

问题描述:

通分:1/2x-2,1/(x-1)²

应该是1/﹙2x-2﹚吧?
1/﹙2x-2﹚=1/2﹙x-1﹚=﹙x-1﹚/2﹙x-1﹚²
1/﹙x-1﹚²=2/2﹙x-1﹚²