defence exam DGAFMS Group C 2025 Mock Test Series Quantitative Aptitude Algebra Identities

a + b + c = 2s என்றால், [(s – a)2 + (s – b)2 + (s – c)2 + s2 ] = ?

1
(s2 – a2 – b2 – c2 )
2
(s2 + a2 + b2 + c2 )
3
(a2 + b2 + c2 )
4
(4s2 – a2 – b2 – c2 )
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