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March 30, 2017

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ã49 + ã343 - ã2401 =

please help me solve

  • math - ,

    I can not read your symbols, assume radical for square root
    sqrt 49 + sqrt 343 - sqrt 2401 ???
    343 = 7^3
    2401 = 7^4
    so I have
    7 + 7 sqrt 7 + 49
    = 56 + 7 sqrt 7

  • negative sign - ,

    forgot the negative
    7 + 7 sqrt 7 - 49
    - 42 + 7 sqrt 7

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