Length of latusrectum of the parabola 12y=x²+ 2x is equal to _________

Equation of parabola
$12\mathrm{y}={\mathrm{x}}^2+2\mathrm{x}$
or $\mathrm{y}=\frac{1}{12}{\mathrm{x}}^2+\frac{1}{6}\mathrm{x}$
Length of latus rectum = reciprocal of the coefficient of x²=12