If a = 7, b = 5 and c = 3, then the value of a2 + b2 + c2 - ab - bc - – McqOptions

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1.	If a = 7, b = 5 and c = 3, then the value of a2 + b2 + c2 - ab - bc - ca is?
A.	2
B.	12
Answer» B. 12

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