If `(x_1,y_1),(x_2, y_2)` are the extremities of a focal chord of the parabola `y^2 = 16x` then `4x_1 x_2 + y_1y_2` =

If (x_1,y_1) and (x_2,y_2) are the end points of a focal chord of the parabola y^2=5x , then 4x_1 x_2+y_1y_2=

If (x_(1),y_(1)) & (x_(2),y_(2)) are the extremities of the focal chord of parabola y^(2)=4ax then y_(1)y_(2)=

If (x _(1), y_(1))and (x_(2), (y_(2)) are the end points of a focal chord of the parabola y ^(2) = 5x, then 4 x _(1) x_(2)+y_(1)y_(2)=

If (x_(1), y_(1)) and (x_(2), y_(2)) are the end points of a focal chord of the parabola y^(2) = 5x , then 4x_(1)x_(2) + y_(1)y_(2) =

If (x _(a), y_(1))and (x_(2), (y_(2)) are the end points of a focal chord of the parabola y ^(2) = 5x, then 4 x _(1) x_(2)+y_(1)y_(2)=

The tangents drawn at the extremities of a focal chord of the parabola y^(2)=16x

If (x_(1),y_(1)) and (x_(2),y_(2)) are the end points of focal chord of the parabola y^(2)=4ax then 4x_(1)x_(2)+y_(1)y_(2)

The tangents drawn at the extremeties of a focal chord of the parabola y^(2)=16x

If (x_(1),y_(1)) and (x_(2),y_(2)) are the ends of a focal chord of the parabola y^(2) = 4ax then show that x_(1)x_(2)=a^(2),y_(1)y_(2)= -4a^(2)

If (x_(1),y_(1)) and (x_(2),y_(2)) are the ends of a focal chord of the parabola y^(2) = 4ax then show that x_(1),x_(2)=a^(2),y_(1),y_(2)= -4a^(2)