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Rue Vitale · Answer 1 · 2024-04-06T10:49:34+0000

Answer:

√63 = √9*V7 = 3√7

√28 =√4*√7 = 2√7

√847=√121*√7 = 11√7

√63+√28-√847 = 3√7+2√7-11√7=-6√7

Explanation: