1,-2,3,-4,7,-8,15,-16 ( ) ( )``````(找规律填空!）

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1,-2,3,-4,7,-8,15,-16()()``````(找规律填空!）1,-2,3,-4,7,-8,15,-16()()``````(找规律填空!）1,-2,3,-4,7,-8,15,-16(

1,-2,3,-4,7,-8,15,-16 ( ) ( )``````(找规律填空!）
1,-2,3,-4,7,-8,15,-16 ( ) ( )``````
(找规律填空!）

1,-2,3,-4,7,-8,15,-16 ( ) ( )``````(找规律填空!）
1,-2,3,-4,7,-8,15,-16 ( 31) (-32 )``````
正数规律是 +2 +4 +8 +16
负数规律是 +2 +4 + 8 +16