" 20."x^(2)-y^(2)+6y-9

Factorise: 4x ^(2) - y ^(2)+ 6y-9.

The equation of the circle touching Y-axis at (0,3) and making intercept of 8 units on the axis (a) x^(2)+y^(2)-10x-6y-9=0 (b) x^(2)+y^(2)-10x-6y+9=0 (c) x^(2)+y^(2)+10x-6y-9=0 (d) x^(2)+y^(2)+10x+6y+9=0

The angle between the pair of tangents drawn from a point P to the circle x^(2)+y^(2)+4x-6y+9sin^(2)alpha+13cos^(2)alpha=0 is 2 alpha. then the equation of the locus of the point P is x^(2)+y^(2)+4x-6y+4=0x^(2)+y^(2)+4x-6y-9=0x^(2)+y^(2)+4x-6y-4=0x^(2)+y^(2)+4x-6y+9=0

A common tangent to the conic x^(2) = 6y and 2x^(2) -4y^(2) =9 is

Which of the following is/are true ? The circles x^(2)+y^(2)-6x+6y+9=0 and x^(2)+y^(2)+6x+6y+9=0 are such that :

Which of the following is/are true ? The circles x^(2)+y^(2)-6x+6y+9=0 and x^(2)+y^(2)+6x+6y+9=0 are such that :

The external centre of similitude of the two circles x^(2)+y^(2)-2x-6y+9=0, x^(2)+y^(2)=4 is

The external centre of similitude of the two circles x^(2)+y^(2)-2x-6y+9=0, x^(2)+y^(2)=4 is

A common tangent to the conics x^(2)=6y and 2x^(2)-4y^(2)=9 is