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[" The slopes of the lines given by "12x...

[" The slopes of the lines given by "12x^(2)+bxy-y^(2)=0" differ by "7" then the value of "b" is "],[[" A) "2," B) "+-2," C) "+-1," D) "1],[" O "A],[" O "," в "],[" O ",],[" 0",]]

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