" (iii) "y^(2)-8y+16=0

(i) 7x^(2) + 16x - 15 = 0 (ii) 5y^(2)+ 8y - 21 = 0

I. x^(2) + 4x+4 = 0 II. y^(2) - 8y + 16 = 0

The circle with centre (4,-1) and touching x -axis is x^(2)+y^(2)-8x+2y+16=0

The angle between the asymptote of the hyperbola 2 x^(2)-2 y^(2)-8 x+16 y-5=0 is

Which of the following points in the xy-plane represents the center of the circle defined by the equation x ^(2) +y ^(2) -4x-8y-16 =0 ?

Find the number of common tangents of two circles x^(2)+y^(2)=4,x^(2)+y^(2)-6x-8y+16=0 ,

Find the number of common tangents of two circles x^(2)+y^(2)=4,x^(2)+y^(2)-6x-8y+16=0 ,

The number of direct common tangents that can be drawn to the circles x^(2)+y^(2)+4x-6y-12=0 and x^(2)+y^(2)-8x+10y+16=0 is/are