[" 59.If the lines represented by "],[ax...

[" 59.If the lines represented by "],[ax^(2)+4xy+y^(2)+8x+2fy+c=0],[" intersect on "Y" -axis,then "(f,c)=],[[" 1) "(2,4)" 2) "(4,2)" 3) "(-2,-4)4)(-4,-2)]]

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