What is the value of a - b when a2 + b2 - 6a - 6b + 18 = 0? – McqOptions

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1.	What is the value of a - b when a2 + b2 - 6a - 6b + 18 = 0?
A.	0
B.	3
C.	6
D.	9
Answer» B. 3

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