If \[6{{x}^{2}}+11xy-10{{y}^{2}}+x+31y+k=0\] represents a pair of stra – McqOptions

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1.	If \[6{{x}^{2}}+11xy-10{{y}^{2}}+x+31y+k=0\] represents a pair of straight lines, then \[k=\] [MP PET 1991]
A.	-15
B.	6
C.	-10
D.	-4
Answer» B. 6

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