2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1怎样才能简便算出它们呢?
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![2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1怎样才能简便算出它们呢?](/uploads/image/z/1073636-44-6.jpg?t=2%2F1%2B4%2F1%2B8%2F1%2B16%2F1%2B32%2F1%2B64%2F1%2B128%2F1%2B256%2F1%E6%80%8E%E6%A0%B7%E6%89%8D%E8%83%BD%E7%AE%80%E4%BE%BF%E7%AE%97%E5%87%BA%E5%AE%83%E4%BB%AC%E5%91%A2%3F)
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2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1怎样才能简便算出它们呢?
2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1怎样才能简便算出它们呢?
2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1怎样才能简便算出它们呢?
不用很复杂的.2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1 =2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1+256/1-256/1 =2/1+4/1+8/1+16/1+32/1+64/1+128/1+128/1-256/1 =2/1+4/1+8/1+16/1+32/1+64/1+64/1-256/1 =2/1+4/1+8/1+16/1+32/1+32/1-256/1 =2/1+4/1+8/1+16/1+16/1-256/1 =2/1+4/1+8/1+8/1-256/1 =2/1+4/1+4/1-256/1 =2/1+2/1-256/1 =1-256/1 =255/1