问题
解答题
计算：a2-
|
答案
原式=
-a2(a+1) a+1
-1 a+1 a+1 a+1
=a2(a+1)-1-(a+1) a+1
=a3+a2-1-a-1 a+1
=
．a3+a2-a-2 a+1
搜题请搜索小程序“爱下问搜题”
计算：a2-
|
原式=
-a2(a+1) a+1
-1 a+1 a+1 a+1
=a2(a+1)-1-(a+1) a+1
=a3+a2-1-a-1 a+1
=
．a3+a2-a-2 a+1