问题
填空题
计算：
|
答案
-a-ba2 a+b
=a2-(a+b)2 a+b
=-
；2ab+b2 a+b
(
-1 x2
)÷(1 a2
+1 x
)1 a
=(
+1 x
)(1 a
-1 x
)1 a
+1 x 1 a
=
-1 x 1 a
=
．a-x ax
搜题请搜索小程序“爱下问搜题”
计算：
|
-a-ba2 a+b
=a2-(a+b)2 a+b
=-
；2ab+b2 a+b
(
-1 x2
)÷(1 a2
+1 x
)1 a
=(
+1 x
)(1 a
-1 x
)1 a
+1 x 1 a
=
-1 x 1 a
=
．a-x ax