If the lines \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] represents the adjacent – McqOptions

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1.	If the lines \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\] represents the adjacent sides of a parallelogram, then the equation of second diagonal if one is \[lx+my=1\], will be
A.	\[(am+hl)x=(bl+hm)y\]
B.	\[(am-hl)x=(bl-hm)y\]
C.	\[(am-hl)x=(bl+hm)y\]
D.	None of these
Answer» C. \[(am-hl)x=(bl+hm)y\]

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