通分!1/2x-2,1/(x-1)^2
问题描述:
通分!1/2x-2,1/(x-1)^2
答
公分母是2(x-1)²
1/2x-2=(x-1)/[2(x-1)²]
1/(x-1)^2=2/[2(x-1)²]