If a + b + c = 14 and a2 + b2 + c2 = 96, then (ab + bc + ca) = ? – McqOptions

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1.	If a + b + c = 14 and a² + b² + c² = 96, then (ab + bc + ca) = ?
A.	51
B.	55
C.	50
D.	65
Answer» D. 65

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