Centre of hyperbola \[9{{x}^{2}}-16{{y}^{2}}+18x+32y-151=0\] is

1.	Centre of hyperbola \[9{{x}^{2}}-16{{y}^{2}}+18x+32y-151=0\] is
A.	(1, ?1)
B.	(?1, 1)
C.	(?1, ?1)
D.	(1, 1)
Answer» C. (?1, ?1)

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Centre of hyperbola \[9{{x}^{2}}-16{{y}^{2}}+18x+32y-151=0\] is

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