Q84. Suppose $A B$ is a focal chord of the parabola $y ^ { 2 } = 12 x$ of length $l$ and slope $\mathrm { m } < \sqrt { 3 }$. If the distance of the chord AB from the origin is d , then $l \mathrm {~d} ^ { 2 }$ is equal to $\_\_\_\_$
Q84. Suppose $A B$ is a focal chord of the parabola $y ^ { 2 } = 12 x$ of length $l$ and slope $\mathrm { m } < \sqrt { 3 }$. If the distance of the chord AB from the origin is d , then $l \mathrm {~d} ^ { 2 }$ is equal to $\_\_\_\_$\\