{"result":{"text":"begin mathsize 14px style equals left parenthesis negative 1 plus m plus n right parenthesis squared over 3 plus left parenthesis l minus m plus n right parenthesis squared over 3 plus left parenthesis 1 plus m minus n right parenthesis squared over 3 plus left parenthesis 1 plus m plus n right parenthesis squared over 3 end style"},"status":"ok"}