(1+3+5+…….+2007+2009+2011)×(125125.127-127127.125)

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1.    (1+3+5+…….+2007+2009+2011)×(125125.127-127127.125)

   = (1+3+5+…….+2007+2009+2011)×(125.1001.127-127.1001.125)

   = (1+3+5+…….+2007+2009+2011)× 0

   = 0

                     Cho mik ctlhn nha !

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2. Đáp án:

    `=0`

   Giải thích các bước giải:

   `(1+3+5+…+2007+2009+2011)xx(125125xx127-127127xx125)`

   `=(1+3+5+…+2007+2009+2011)xx(12510001xx127-1271001xx125)`

   `=(1+3+5+…+2007+2009+2011)xx(125xx127-127xx125)“xx1001`

   `=(1+3+5+…+2007+2009+2011)xx0xx1001=0`

    

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