题目内容
(-5)2n+1+5×(-5)2n=________.
答案:0
提示:
提示:
|
提示:原式=-52n+1+5×52n=-52n+1+52n+1=0. |
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题目内容
(-5)2n+1+5×(-5)2n=________.
|
提示:原式=-52n+1+5×52n=-52n+1+52n+1=0. |