Let 'a' and 'b' be non-zero real numbers. Then, the equation `(ax^2+ by^2+c) (x^2-5xy+6y^2)` represents :

Let a and b be non-zero real numbers. Then the equation : (ax^2 + by^2 + c)(x^2 - 5xy + 6y^2) = 0 represents :

Let a and b are non-zero real numbers.Then the equation (ax^(2)+by^(2)+c)(x^(2)-5xy+6y^(2))=0 represents (A) two straight lines and a circle when a=b and a>0,c (B) two straight lines and a circle when a!=b (C) two straight lines and a circle when a=b and a 0 (D) four straight lines when c=0 and a>0,b>0

Let p and q be non-zero real numbers,Then the equation (px^(2)+qy^(2)+r)(4x^(2)+4y^(2)-8x-4)=0 represents

Let a, b, c be non-zero real roots of the equation x^(3)+ax^(2)+bx+c=0 . Then

Let k be a non-zero real number.The two lines with equations y-3x+k=0 and 6x-2y=k

The equation x^(2)+4xy+4y^(2)-3x-6y-4=0 represents a

The equation x^(2)+4xy+4y^(2)-3x-6y-4=0 represents a