本题应该是落下括号了
具体化简过程如下所示
(a+1)÷(a+2)
=(a+1)/(a+2)
=(a+2-1)/(a+2)
=(a+2)/(a+2)-1/(a+2)
=1-1/(a+2)
其中,a≠-2
a+1÷a+2化简为多少?a+1/a+2=a平方/a+1/a+2a/a=(a+1)平方/a
a+1÷a+2化简为多少?
a+1/a+2=a平方/a+1/a+2a/a=(a+1)平方/a
解:a+1÷a+2
=a+1/a+2
=a又1/a+2 (a为常数,a≠0)
=(a²+2a+1)/a