docheri on "[Plugin: Jetpack by WordPress.com] LaTeX not parsing"

I have JetPack 2.4 installed and I'm trying without success to include LaTeX math equations. Here is sample:

$latex t = \sqrt{\frac{2d} {g}} \;\text{where}\; {g=9.81 \,\text{m/s}^2}$
$latex d = \frac{1} {2}gt^2,d \;\text{in meters}$

JetPack fails to render this code as LaTeX equations. Instead, the code string is displayed. The plugin WP LaTeX renders these equations perfectly. I am trying to use JetPack so I disabled WP LaTeX. I'm trying to use JetPack because my .org implementation is a sandbox the specific purpose of which is to support my .com site, thomasdocheri.com. WP LaTeX has syntactic differences that prevent copy and paste between .org and .com. Any ideas why this code does not work with JetPack?

Thanks
Thomas