25^x=2000,80^y=2000,试说明1/x+1/y=1请不要用函数
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25^x=2000,80^y=2000,试说明1/x+1/y=1
25^x=2000,80^y=2000,试说明1/x+1/y=1
25^x=2000,80^y=2000,则1/x+1/y等于()
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