Equation of the line pair through the origin and perpendicular to the origin and perpendicular to the line pair xy−3y2+y−2x+10=0 is
If the pairs of lines x2+2xy+ay2=0 and ax2+2xy+y2=0 have exactly one line in common then the joint equation of the other two lines is given by
Find the equation to the circle which passes through the origin and has its center on the line x + y + 4 = 0 and cuts the circle x2+y2−4x+2y+4=0 orthogonally.