Mathematics, 17.07.2019 15:00 hsjsjsjdjjd

Which expression is equal to 7√28 - 5 √63 a: -√7 b: √7 c: -37√7 d: -11√7

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Which expression is equal to 7√28 - 5 √63 a: -√7 b: √7 c: -37√7 d: -11√7...