SSC SSC CPO Mock Test Series 2025 (Tier I & II) (DP SI & CAPF) Quantitative Aptitude Algebra Identities

If a2 + b2 + c2 = 6.25 and (ab + bc + ca) = 0.52, what is the value of (a + b + c), if (a + b + c) < 0?

1
\(\pm\)2.8
2
\(\pm\)2.7
3
-2.7
4
-2.8
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