B. If 2x² + 6xy + 9y2 + 4x +12y + 3 = 0 represents a pair of straight lines, then 2 = a)-3
b)-4
c) 1
d) 5
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B. If 2x² + 6xy + 9y2 + 4x +12y + 3 = 0 represents a pair of straight lines, then 2 = a)-3
b)-4
c) 1
d) 5
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