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一個數(非零)的零次方等於1, 由於前面有負號,所以整個式子等於-1,例如 表達如下:- aº=-(1)=-1
沒括弧的得負數,有括弧的偶次方等正數是對的-24的四次方跟是開方(-24)的四次方是乘方運算方法是互為逆運算
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