If x2 + 8y2 + 12y - 4xy + 9 = 0, then the value of (7x + 8y) is: – McqOptions

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1.	If x2 + 8y2 + 12y - 4xy + 9 = 0, then the value of (7x + 8y) is:
A.	9
B.	-33
C.	-9
D.	33
Answer» C. -9

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