The equation `16x^(2)+y^(2)+8xy-74x-78y+212=0` represents

The equation 16 x^2+y^2+8x y-74 x-78 y+212=0 represents a. a circle b. a parabola c. an ellipse d. a hyperbola

The equation 14x^(2)-4xy+11y^(2)-44x-58y+71=0 represents

The equation 6x^(2)-xy-12y^(2)-8x+29y-14=0 represents a pair of lines, then the angle between them is ..............?

The equation 6x^(2)-xy-12y^(2)-8x+29y-14=0 represents a pair of lines, then the angle between them is ..............?

The equation 16x^(2) - 3y^(2) - 32x - 12y - 44 = 0 represents a hyperbola, which one of the following is /are correct

The equation 16x^(2) - 3y^(2) - 32x - 12y - 44 = 0 represents a hyperbola, which one of the following is /are correct

The equation x^(2) + y^(2) - 2xy -1 =0 represents :

The equation x^(2) + y^(2) - 2xy -1 =0 represents :