A) \[2{{x}^{2}}+5xy+{{y}^{2}}=0\]
B) \[{{x}^{2}}+2{{y}^{2}}+5xy=0\]
C) \[{{x}^{2}}-5xy+2{{y}^{2}}=0\]
D) \[2{{x}^{2}}+{{y}^{2}}-5xy=0\]
Correct Answer: B
Solution :
In this case coefficient of \[{{x}^{2}}\]and \[{{y}^{2}}\]are inter-changed and sign of h is changed.
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