问题
解答题
化简求值：
|
答案
原式=
÷(x+1)2 x+2
-(x+1)(x-1) x-1 1 x+2
=
×(x+1)2 x+2
-1 x+1 1 x+2
=
-x+1 x+2 1 x+2
=
；x x+2
当x=时，原式=
=2
+22
=
(2-2
)2 (2+
)(2-2
)2
-1．2
搜题请搜索小程序“爱下问搜题”
化简求值：
|
原式=
÷(x+1)2 x+2
-(x+1)(x-1) x-1 1 x+2
=
×(x+1)2 x+2
-1 x+1 1 x+2
=
-x+1 x+2 1 x+2
=
；x x+2
当x=时，原式=
=2
+22
=
(2-2
)2 (2+
)(2-2
)2
-1．2