按规律填空:-2,4,-8,16,-32,64,···第n个数是多少?

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按规律填空:-2,4,-8,16,-32,64,···第n个数是多少?按规律填空:-2,4,-8,16,-32,64,···第n个数是多少?按规律填空:-2,4,-8,16,-32,64,···第n个

按规律填空:-2,4,-8,16,-32,64,···第n个数是多少?
按规律填空:-2,4,-8,16,-32,64,···第n个数是多少?

按规律填空:-2,4,-8,16,-32,64,···第n个数是多少?
(-2)的n次方