(a2-1)/(a2+2a+1)除以(a2-a)/(a+1) (a-2/(a+3)除以(a2-4)/(a2+6a+9)
问题描述：
(a2-1)/(a2+2a+1)除以(a2-a)/(a+1) (a-2/(a+3)除以(a2-4)/(a2+6a+9)
答
(a2-1)/(a2+2a+1)除以(a2-a)/(a+1) (a-2/(a+3)除以(a2-4)/(a2+6a+9)=﹙a²-1﹚／﹙a²+2a+1﹚×﹙a+1﹚／﹙a²-a﹚×﹙a-2﹚／﹙a＋3﹚×﹙a²＋6a＋9﹚／﹙a²-4﹚=﹙a+1)(a-1)／(a+1)² ...(a2-1)/(a2+2a+1)除以(a2-a)/(a+1)(a-2/(a+3)除以(a2-4)/(a2+6a+9)分开的两个题唉,我以为是一个题呢第一个是1/a第二个是(a+3)/(a+2)哦,过程呢?先给你分吧!