If a 2 + b 2 + c 2 = 6.25 and (ab + bc + ca) = 0.52, what is the value of (a + b – OfficerPath

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If a 2 + b 2 + c 2 = 6.25 and (ab + bc + ca) = 0.52, what is the value of (a + b + c), if (a + b + c) < 0?

Subject: MathematicsTopic: Algebra

A

±2.7

B

-2.7

C

-2.8

D

±2.8

Correct Answer: B

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