If a + b + c = 7 and a3 + b3 + c3 - 3abc = 175, then what is the va – McqOptions

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1.	If a + b + c = 7 and a3 + b3 + c3 - 3abc = 175, then what is the value of ab + bc + ca?
A.	9
B.	7
C.	10
D.	8
Answer» E.

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