简便运算:256×254/255+254×1/255拜托了各位
问题描述:
简便运算:256×254/255+254×1/255拜托了各位
答
他的不对!应该这样:256×254/255+254×1/255 =(255+1)×254/255+(255-1)×1/255 应该对了 =255×254/255+1×254/255+255×1/255-1×1/255 =254+254/255+1-1/255 结果=255又253/255