A) 1
B) 2
C) 3
D) -1
Correct Answer: B
Solution :
Given equation represents a pair of straight lines, if \[abc+2fgh-a{{f}^{2}}-b{{g}^{2}}-c{{h}^{2}}=0\] \[\Rightarrow -36L+200-64L-75+75=0\] \[\Rightarrow -100L+200=0,\,\,\,\therefore L=2\].
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