化简:(a/a-1-2a-1/a-1)÷a-1/a+2
问题描述:
化简:(a/a-1-2a-1/a-1)÷a-1/a+2
答
(a/a-1-2a-1/a-1)÷a-1/a+2
=(a-2a+1)/(a-1)÷ (a-1)/(a+2)
=(1-a)/(a-1)÷ (a-1)/(a+2)
=(a+2)/(1-a)
在右上角点击【评价】,然后就可以选择【满意,问题已经完美解决】了.