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�ã49 + �ã343 - �ã2401 =

please help me solve

2 answers

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

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

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