Pls solve this and send 50points for them.Dont spam I request – InterviewSolution

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Pls solve this and send 50points for them.Dont spam I request

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$As \: We \: know \: that :-$

$====================$

$(a + b + c)²=(a²+b²+c²)+2(ab+bc+ca)$

$(a + b + c)² = 74 + 2(61)$

$(a + b + c)² = 74 + 122$

$(a + b + c)² = 196$

$(a + b + c) = √196$

$(a + b + c) = 14$

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