把下列各數(shù)分別填入相應的集合里.
(-2)2,0,|-
7
8
|
,-
23
7
,3.1415,213,+(-3),-6,-(-2.1)
整數(shù)集合{                                                   …}
分數(shù)集合{…}
正數(shù)集合{                                                    …}
負數(shù)集合{                                                    …}
有理數(shù)集合{                                                  …}.
整數(shù)集合{(-2)2,0,213,+(-3),-6,…};
分數(shù)集合{|-
7
8
|,-
23
7
,3.1415,-(-2.1),…};
負數(shù)集合{-
23
7
,+(-3),-6,…};
正數(shù)集合{(-2)2,|-
7
8
|
,3.1415,213,-(-2.1)};
有理數(shù)集合{ (-2)2,0,|-
7
8
|
,-
23
7
,3.1415,213,+(-3),-6,-(-2.1)…}.
故答案是:(-2)2,0,213,+(-3),-6;
|-
7
8
|,-
23
7
,3.1415,-(-2.1);
-
23
7
,+(-3),-6;
(-2)2|-
7
8
|
,3.1415,213,-(-2.1);
(-2)2,0,|-
7
8
|
,-
23
7
,3.1415,213,+(-3),-6,-(-2.1).
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