If the pairs of lines `ax^2+2hxy+by^2=0` and `a'x^2+2h'xy+b'y^2=0` have one line in common, then `(ab'-a'b)^2` is equal to

If the pair of lines x^(2)+2xy+ay^(2)=0 and ax^(2)+2xy+y^(2)=0 have exactly one line in common, then a =

If the pairs of lines x^(2)+2xy+ay^(2)=0 and ax^(2)+2xy+y^(2)=0 have exactly one line in common,then the joint equation of the other two lines is given by 3x^(2)+8xy-3y^(2)=03x^(2)+10xy+3y^(2)=0y^(2)+2xy-3x^(2)=0x^(2)+2xy-3y^(2)=0

If the pairs of lines x^(2)+2xy+ay^(2)=0andax^(2)+2xy+y^(2)=0 have exactly one line in common then the joint equation of the other two lines is given by

If two pairs of straight lines having equations y^(2)+xy-12x^(2)=0 and ax^(2)+2hxy+by^(2)=0 have one line common, then a =

The equations a^2x^2+2h(a+b)xy+b^2y^2=0 and ax^2+2hxy+by^2=0 represent.

If the bisectors of angles represented by ax^(2)+2hxy+by^(2)=0 and a'x^(2)+2h'xy+b'y^(2)=0 is same , then

If the bisectors of the angles between the pairs of lines ax^(2)+2hxy+by_(2)=0 and ax^(2)+2hxy+by^(2)+lamda(x^(2)+y^(2))=0 are coincident, then: lamda=

If the pair of lines ax^(2)+2hxy+by^(2)+2gx+2fy+c=0 intersect on the y-axis then

If h^(2)=ab then slopes of lines ax^(2)+2hxy+by^(2)=0 are in the ratio

Two pair of straight lines have the eqautions y^2+xy-12x^2=0 and ax^2+2hxy+by^2=0 . One line will be common among them if