Rationalize the denominator of square root of negative 9 over open parentheses 4 minus 7 i close parentheses minus open parentheses 6 minus 6 i close parenthe . (6 points) 1. quantity of negative 3 minus 6 i over 5 2. quantity of 39 minus 6 i over negative 9 3. quantity of negative 39 minus 6 i over 17 4. quantity of 3 minus 6 i over 3