错位相减法求:1\2-1\4+1\8+1\32-1\64=1\128得和.错了错了.1\2-1\4+1\8-1\16+1\32-1\64+1\128的和

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错位相减法求:1\2-1\4+1\8+1\32-1\64=1\128得和.错了错了.1\2-1\4+1\8-1\16+1\32-1\64+1\128的和错位相减法求:1\2-1\4+1\8+1\32-

错位相减法求:1\2-1\4+1\8+1\32-1\64=1\128得和.错了错了.1\2-1\4+1\8-1\16+1\32-1\64+1\128的和
错位相减法求:1\2-1\4+1\8+1\32-1\64=1\128得和.
错了错了.
1\2-1\4+1\8-1\16+1\32-1\64+1\128的和

错位相减法求:1\2-1\4+1\8+1\32-1\64=1\128得和.错了错了.1\2-1\4+1\8-1\16+1\32-1\64+1\128的和
你的题目是不是第三个符号错了·应该是减号吧