Mathematics
Junior High
符号を使ってxの変域を表すやつなんですけど（2）（3）教えてくれたら嬉しいです。
(2)
(3)
***** AJS 2008** [IN]
-4
-2
309-4-2
0
2
0
2
TX8 LNO
4
4
0
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