{"result":{"text":"begin mathsize 14px style a with rightwards arrow on top cross times c with rightwards arrow on top equals open parentheses j with hat on top minus k with hat on top close parentheses cross times open parentheses i with hat on top minus j with hat on top minus k with hat on top close parentheses equals negative 2 i with hat on top minus j with hat on top minus k with hat on top end style"},"status":"ok"}