化简:(a^2-a)÷(a^2-2a+1)/(a-1)
问题描述:
化简:(a^2-a)÷(a^2-2a+1)/(a-1)
答
(a^2-a)÷(a^2-2a+1)/(a-1)
=a(a-1)÷(a-1)^2/(a-1)
=a(a-1)÷(a-1)
=a