यदि \(|\vec a|\) = 3, \(\left| {\vec b} \right| = 4\) और \(\left| {\vec a - \vec b} \right| = 5,\) तो \(\left| {\vec a + \vec b} \right|\) का मूल्य क्या है?

1
8
2
6
3
5√2
4
5

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