If a(a + b + c) = 45, b(a + b + c) = 75 and c(a + b + c) = 105, then w – McqOptions

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1.	If a(a + b + c) = 45, b(a + b + c) = 75 and c(a + b + c) = 105, then what is the value of (a2 + b2 + c2)?
A.	75
B.	83
C.	217
D.	225
Answer» C. 217

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